Lenovo Personal Computer 1654 User Manual

ThinkCentre  
User Guide  
Machine Types: 1654, 1664, 1665, 1677, 1738, 1739, 1741, 1761,  
1762, 1763, 1782, 1837, 1938, 1942, 1962, and 1966.  
 
Contents  
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Static electricity prevention.  
Accessibility and comfort  
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External devices .  
Comfort  
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Operating environment  
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Laser compliance statement .  
region .  
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Voltage-selection switch .  
Replacement power cords .  
Features .  
Specifications .  
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4
4
4
6
6
7
Security features .  
25  
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Using passwords.  
Antivirus software.  
Locations. .  
Using and understanding firewalls .  
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computer .  
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Adjusting audio .  
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© Copyright Lenovo 2011  
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57  
drivers .  
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problems .  
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Networking problems .  
41  
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Using passwords.  
Diagnostic programs .  
Information resources .  
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sequence .  
43  
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45  
Using the documentation and diagnostic  
70  
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system.  
46  
47  
Trademarks .  
74  
computer .  
47  
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50  
50  
Export classification notice .  
75  
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75  
Basics .  
Federal Communications Commission  
75  
77  
Chapter 10. Troubleshooting and  
Basic troubleshooting .  
Troubleshooting procedure .  
51  
52  
52  
53  
54  
55  
Troubleshooting .  
2002/96/EC .  
Recycling information .  
79  
79  
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Important safety information  
CAUTION:  
Before using this manual, be sure to read and understand all the related safety information for this  
product. Refer to the information in this section and the safety information in the ThinkCentre Safety  
and Warranty Guide that you received with this product. Reading and understanding this safety  
information reduces the risk of personal injury and damage to your product.  
If you no longer have a copy of the ThinkCentre Safety and Warranty Guide, you can obtain a Portable  
Document Format (PDF) version from the Lenovo® Support Web site at http://www.lenovo.com/support. The  
Lenovo Support Web site also provides the ThinkCentre Safety and Warranty Guide and this ThinkCentre  
User Guide in additional languages.  
Service and upgrades  
Do not attempt to service a product yourself unless instructed to do so by the Customer Support Center or  
your documentation. Only use a Service Provider who is approved to repair your particular product.  
Note: Some computer parts can be upgraded or replaced by the customer. Upgrades typically are  
referred to as options. Replacement parts approved for customer installation are referred to as Customer  
Replaceable Units, or CRUs. Lenovo provides documentation with instructions when it is appropriate for  
customers to install options or replace CRUs. You must closely follow all instructions when installing or  
replacing parts. The Off state of a power indicator does not necessarily mean that voltage levels inside a  
product are zero. Before you remove the covers from a product equipped with a power cord, always make  
sure that the power is turned off and that the product is unplugged from any power source. For more  
information on CRUs, refer to Chapter 5 “Installing or replacing hardware” on page 29. If you have any  
questions or concerns, contact the Customer Support Center.  
Although there are no moving parts in your computer after the power cord has been disconnected, the  
following warnings are required for your safety.  
CAUTION:  
Hazardous moving parts. Keep fingers and other body parts away.  
CAUTION:  
Before replacing any CRUs, turn off the computer and wait three to five minutes to let the computer  
cool before opening the cover.  
Static electricity prevention  
Static electricity, although harmless to you, can seriously damage computer components and options.  
Improper handling of static-sensitive parts can cause damage to the part. When you unpack an option  
© Copyright Lenovo 2011  
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or CRU, do not open the static-protective package containing the part until the instructions direct you  
to install it.  
When you handle options or CRUs, or perform any work inside the computer, take the following precautions  
to avoid static-electricity damage:  
• Limit your movement. Movement can cause static electricity to build up around you.  
• Always handle components carefully. Handle adapters, memory modules, and other circuit boards by the  
edges. Never touch exposed circuitry.  
• Prevent others from touching components.  
• When you install a static-sensitive option or CRU, touch the static-protective package containing the  
part to a metal expansion-slot cover or other unpainted metal surface on the computer for at least two  
seconds. This reduces static electricity in the package and your body.  
• When possible, remove the static-sensitive part from the static-protective packaging and install the part  
without setting it down. When this is not possible, place the static-protective packaging on a smooth,  
level surface and place the part on it.  
• Do not place the part on the computer cover or other metal surface.  
Power cords and power adapters  
Use only the power cords and power adapters supplied by the product manufacturer.  
The power cords shall be safety approved. For Germany, it shall be H05VV-F, 3G, 0.75 mm2, or better. For  
other countries, the suitable types shall be used accordingly.  
Never wrap a power cord around a power adapter or other object. Doing so can stress the cord in ways that  
can cause the cord to fray, crack, or crimp. This can present a safety hazard.  
Always route power cords so that they will not be walked on, tripped over, or pinched by objects.  
Protect power cord and power adapters from liquids. For instance, do not leave your power cord or power  
adapter near sinks, tubs, toilets, or on floors that are cleaned with liquid cleansers. Liquids can cause a  
short circuit, particularly if the power cord or power adapter has been stressed by misuse. Liquids also can  
cause gradual corrosion of power cord terminals and/or the connector terminals on a power adapter,  
which can eventually result in overheating.  
Always connect power cords and signal cables in the correct order and ensure that all power cord  
connectors are securely and completely plugged into receptacles.  
Do not use any power adapter that shows corrosion at the ac input pins or shows signs of overheating (such  
as deformed plastic) at the ac input or anywhere on the power adapter.  
Do not use any power cords where the electrical contacts on either end show signs of corrosion or  
overheating or where the power cord appears to have been damaged in any way.  
Extension cords and related devices  
Ensure that extension cords, surge protectors, uninterruptible power supplies, and power strips that you use  
are rated to handle the electrical requirements of the product. Never overload these devices. If power strips  
are used, the load should not exceed the power strip input rating. Consult an electrician for more information  
if you have questions about power loads, power requirements, and input ratings.  
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Plugs and outlets  
If a receptacle (power outlet) that you intend to use with your computer equipment appears to be damaged  
or corroded, do not use the outlet until it is replaced by a qualified electrician.  
Do not bend or modify the plug. If the plug is damaged, contact the manufacturer to obtain a replacement.  
Do not share an electrical outlet with other home or commercial appliances that draw large amounts of  
electricity; otherwise, unstable voltage might damage your computer, data, or attached devices.  
Some products are equipped with a three-pronged plug. This plug fits only into a grounded electrical outlet.  
This is a safety feature. Do not defeat this safety feature by trying to insert it into a non-grounded outlet. If  
you cannot insert the plug into the outlet, contact an electrician for an approved outlet adapter or to replace  
the outlet with one that enables this safety feature. Never overload an electrical outlet. The overall system  
load should not exceed 80 percent of the branch circuit rating. Consult an electrician for more information  
if you have questions about power loads and branch circuit ratings.  
Be sure that the power outlet you are using is properly wired, easily accessible, and located close to the  
equipment. Do not fully extend power cords in a way that will stress the cords.  
Be sure that the power outlet provides the correct voltage and current for the product you are installing.  
Carefully connect and disconnect the equipment from the electrical outlet.  
External devices  
Do not connect or disconnect any external device cables other than Universal Serial Bus (USB) and 1394  
cables while the computer power is on; otherwise, you might damage your computer. To avoid possible  
damage to attached devices, wait at least five seconds after the computer is shut down to disconnect  
external devices.  
Heat and product ventilation  
Computers, power adapters, and many accessories can generate heat when turned on and when batteries  
are charging. Always follow these basic precautions:  
• Do not leave your computer, power adapter, or accessories in contact with your lap or any part of your  
body for an extended period when the products are functioning or when the battery is charging. Your  
computer, power adapter, and many accessories produce some heat during normal operation. Extended  
contact with the body could cause discomfort or, potentially, a skin burn.  
• Do not charge the battery or operate your computer, power adapter, or accessories near flammable  
materials or in explosive environments.  
• Ventilation slots, fans, and heat sinks are provided with the product for safety, comfort, and reliable  
operation. These features might inadvertently become blocked by placing the product on a bed, sofa,  
carpet, or other flexible surface. Never block, cover, or disable these features.  
Inspect your desktop computer for dust accumulation at least once every three months. Before inspecting  
your computer, turn off the power and unplug the computer's power cord from the electrical outlet; then  
remove any dust from vents and perforations in the bezel. If you notice external dust accumulation, then  
examine and remove dust from the inside of the computer including heat sink inlet fins, power supply vents,  
and fans. Always turn off and unplug the computer before opening the cover. If possible, avoid operating  
your computer within two feet of high-traffic areas. If you must operate your computer in or near a high-traffic  
area, inspect and, if necessary, clean your computer more frequently.  
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For your safety and to maintain optimum computer performance, always follow these basic precautions  
with your desktop computer:  
• Keep the cover closed whenever the computer is plugged in.  
• Regularly inspect the outside of the computer for dust accumulation.  
• Remove dust from vents and any perforations in the bezel. More frequent cleanings might be required for  
computers in dusty or high-traffic areas.  
• Do not restrict or block any ventilation openings.  
• Do not store or operate your computer inside furniture, as this might increase the risk of overheating.  
• Airflow temperatures into the computer should not exceed 35°C (95°F).  
• Do not install air filtration devices. They may interfere with proper cooling.  
Operating environment  
The optimal environment in which to use your computer is 10°C-35°C (50°F-95°F) with humidity ranging  
between 20% and 80%. If your computer is stored or transported in temperatures less than 10°C (50°F),  
allow the cold computer to rise slowly to an optimal operating temperature of 10°C-35°C (50°F-95°F) before  
use. This process could take two hours in extreme conditions. Failure to allow your computer to rise to an  
optimal operating temperature before use could result in irreparable damage to your computer.  
If possible, place your computer in a well-ventilated and dry area without direct exposure to sunshine.  
Keep electrical appliances such as an electric fan, radio, high-powered speakers, air conditioner, and  
microwave oven away from your computer because the strong magnetic fields generated by these  
appliances can damage the monitor and data on the hard disk drive.  
Do not place any beverages on top of or beside the computer or other attached devices. If liquid is spilled on  
or in the computer or an attached device, a short circuit or other damage might occur.  
Do not eat or smoke over your keyboard. Particles that fall into your keyboard can cause damage.  
Modem safety information  
CAUTION:  
To reduce the risk of fire, use only No. 26 AWG or larger (for example, No. 24 AWG) telecommunication  
line cord listed by Underwriters Laboratories (UL) or certified by the Canadian Standards Association  
(CSA).  
To reduce the risk of fire, electrical shock, or injury when using telephone equipment, always follow basic  
safety precautions, such as:  
• Never install telephone wiring during a lightning storm.  
• Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations.  
• Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at  
the network interface.  
• Use caution when installing or modifying telephone lines.  
• Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote  
risk of electric shock from lightning.  
• Do not use the telephone to report a gas leak in the vicinity of the leak.  
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Laser compliance statement  
CAUTION:  
When laser products (such as CD-ROMs, DVD drives, fiber optic devices, or transmitters) are  
installed, note the following:  
• Do not remove the covers. Removing the covers of the laser product could result in exposure to  
hazardous laser radiation. There are no serviceable parts inside the device.  
• Use of controls or adjustments or performance of procedures other than those specified herein  
might result in hazardous radiation exposure.  
DANGER  
Some laser products contain an embedded Class 3A or Class 3B laser diode. Note the following.  
Laser radiation when open. Do not stare into the beam, do not view directly with optical  
instruments, and avoid direct exposure to the beam.  
Power supply statement  
Never remove the cover on a power supply or any part that has the following label attached.  
Hazardous voltage, current, and energy levels are present inside any component that has this label attached.  
There are no serviceable parts inside these components. If you suspect a problem with one of these parts,  
contact a service technician.  
Cleaning and maintenance  
Keep your computer and workspace clean. Shut down the computer and then disconnect the power  
cord before cleaning the computer. Do not spray any liquid detergent directly on the computer or use  
any detergent containing flammable material to clean the computer. Spray the detergent on a soft cloth  
and then wipe the computer surfaces.  
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Chapter 1. Product overview  
This chapter provides information about the computer features, specifications, software programs provided  
by Lenovo, and locations of connectors, components, parts on the system board, and internal drives.  
Features  
This section introduces the computer features. The information covers a variety of models.  
To view the information about your specific model, do one of the following:  
• Go into the Lenovo BIOS Setup Utility program by following the instructions in Chapter 7 “Using the  
Setup Utility program” on page 41. Then, select Main System Summary to view the information.  
• In Windows environment, click Start, right-click Computer, and select Properties to view the information.  
Microprocessor  
Your computer comes with one of the following microprocessors (internal cache size varies by model type):  
• Intel® Core™ i3 microprocessor  
• Intel Core i5 microprocessor  
• Intel Core i7 microprocessor  
• Intel Celeron® microprocessor  
• Intel Pentium® microprocessor  
Memory  
Your computer supports up to two double data rate 3 small outline dual inline memory modules (DDR3  
SODIMMs).  
Note: The maximum system memory capacity is 8 GB.  
Internal drives  
• Card reader  
• One slim Serial Advanced Technology Attachment (SATA) optical drive  
• One hard disk drive (Standard SATA hard disk drive); one solid state drive (SSD) (available in some models)  
Video subsystem  
• One DisplayPort out connector  
Audio subsystem  
• Integrated high-definition (HD) audio  
• Microphone connector and headphone connector on the front panel  
• Internal speaker  
Connectivity  
• 10/100/1000 Mbps Ethernet controller  
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System management features  
• Ability to store power-on self-test (POST) hardware test results  
• Desktop Management Interface (DMI)  
Desktop Management Interface provides a common path for users to access information about all  
aspects of a computer, including processor type, installation date, attached printers and other peripherals,  
power sources, and maintenance history.  
• Preboot Execution Environment (PXE)  
The Preboot Execution Environment is an environment to start computers using a network interface  
independent of data storage devices (such as the hard disk drive) or installed operating systems.  
• System Management (SM) Basic Input/Output System (BIOS) and SM software  
The SM BIOS specification defines data structures and access methods in a BIOS that allows a user or  
application to store and retrieve information specific about the computer in question.  
• Wake on LAN  
Wake on LAN is an Ethernet computer networking standard that allows a computer to be turned on  
or woken up by a network message. The message is usually sent by a program running on another  
computer on the same local area network.  
• Wake on Ring  
Wake on Ring, sometimes referred to as Wake on Modem, is a specification that allows supported  
computers and devices to resume from sleep or hibernation mode.  
• Windows Management Instrumentation (WMI)  
Windows Management Instrumentation is a set of extensions to the Windows Driver Model. It provides an  
operating system interface through which instrumented components provide information and notification.  
Color temperature adjustment  
The color temperature adjustment function enables you to adjust the color temperature and brightness of  
your computer monitor. For detailed instructions, see “Color temperature adjustment” on page 17.  
Input/Output (I/O) features  
• 9-pin serial port  
• Six Universal Serial Bus (USB) connectors  
• One Ethernet connector  
Two audio connectors (microphone connector and headphone connector)  
Expansion  
• One optical drive bay  
• One hard disk drive bay  
Power supply  
Your computer comes with 150-watt automatic voltage-sensing power supply.  
Security features  
• Computrace Agent software embedded in firmware  
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• Cover presence switch (also called intrusion switch)  
• Ability to enable or disable a device  
• Ability to enable and disable USB connectors individually  
• Keyboard with fingerprint reader (shipped with some models)  
• Power-on password (POP), administrator password, and hard disk drive password to deter unauthorized  
use of your computer  
• Startup sequence control  
• Startup without keyboard or mouse  
• Support for an integrated cable lock (Kensington lock)  
Trusted Platform Module (TPM)  
For more information, see Chapter 4 “Security” on page 25.  
Preinstalled software programs  
Your computer is preinstalled with software programs to help you work more easily and securely. For more  
information, see “Software overview” on page 4.  
Preinstalled operating system  
Your computer is preinstalled with the Microsoft® Windows® 7 operating system.  
Operating system(s), certified or tested for compatibility1 (varies by model type)  
• Linux®  
• Microsoft Windows XP Professional SP 3  
1. The operating system(s) listed here are being certified or tested for compatibility at the time this publication goes to  
press. Additional operating systems might be identified by Lenovo as compatible with your computer following the  
publication of this manual. This list is subject to change. To determine if an operating system has been certified or  
tested for compatibility, check the Web site of the operating system vendor.  
Chapter 1. Product overview  
 
3
Specifications  
This section lists the physical specifications for your computer.  
Dimensions  
Width: 506.8 mm (19.95 inches)  
Height: 411.0 mm (16.18 inches)  
Depth: 71.5 mm (2.81 inches) for non-touch model; 78.0 mm (3.07 inches) for touch model  
Weight  
Maximum configuration as shipped: 7.54 kg (16.62 lb) for non-touch model; 8.85 kg (19.51 lb) for touch model  
Environment  
• Air temperature:  
Operating: 10°C to 35°C (50°F to 95°F)  
Non-operating: -20°C to 60°C (-4°F to 140°F)  
Non-operating: -10°C to 60°C (14°F to 140°F) (without package)  
• Humidity:  
Operating: 20% to 80% (non-condensing)  
Non-operating: 20% to 90% (non-condensing)  
• Altitude:  
Operating: -50 to 10 000 ft (-15.2 to 3 048 m)  
Non-operating: -50 to 35 000 ft (-15.2 to 10 668 m)  
Electrical input  
• Input voltage:  
– Low range:  
Minimum: 100 V ac  
Maximum: 127 V ac  
Input frequency range: 50 to 60 Hz  
– High range:  
Minimum: 200 V ac  
Maximum: 240 V ac  
Input frequency range: 50 to 60 Hz  
Software overview  
The computer comes with a preinstalled operating system and several software programs provided by  
Lenovo.  
Software provided by Lenovo  
The following software programs are provided by Lenovo to help you improve productivity and reduce the  
cost associated with maintaining your computer. Software programs provided with your computer might  
vary depending on your computer model type and preinstalled operating system.  
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Lenovo ThinkVantage Tools  
The Lenovo ThinkVantage® Tools program guides you to a host of information sources and provides easy  
access to various tools to help you work more easily and securely.  
To access the Lenovo ThinkVantage Tools program, click Start All Programs Lenovo ThinkVantage  
Tools.  
The following table lists the programs that you can access from the Lenovo ThinkVantage Tools program. To  
access a program, double-click the corresponding icon.  
Table 1. Program icon names in Lenovo ThinkVantage Tools  
Program name  
Create Recovery Media  
Icon name in Lenovo ThinkVantage Tools  
Factory Recovery Disks  
Fingerprint Reader  
System Health and Diagnostics  
Password Vault  
Fingerprint Software  
Lenovo ThinkVantage Toolbox  
ThinkVantage Password Manager  
ThinkVantage Power Manager  
ThinkVantage Rescue and Recovery®  
ThinkVantage System Update  
Communications Utility  
Power Controls  
Enhanced Backup and Restore  
Update and Drives  
Web Conferencing  
View Management Utility  
Screen Layout  
Lenovo Welcome  
The Lenovo Welcome program introduces you to some innovative built-in features of Lenovo and guides you  
through a few important setup tasks to help you make the most of your computer.  
Fingerprint Software  
The integrated fingerprint reader provided on some keyboards enables you to enroll your fingerprint and  
associate it with your power-on password, hard disk drive password, and Windows password. As a result,  
fingerprint authentication can replace passwords and enable simple and secure user access. A fingerprint  
reader keyboard is available with select computers or can be purchased for computers that support this  
option.  
Lenovo ThinkVantage Toolbox  
The Lenovo ThinkVantage Toolbox program helps you maintain your computer, improve computing security,  
diagnose computer problems, get familiar with the innovative technologies provided by Lenovo, and get more  
information about your computer. See “Lenovo ThinkVantage Toolbox” on page 68 for detailed information.  
Product Recovery  
The Product Recovery program enables you to restore the contents of the hard disk drive to the factory  
default settings.  
ThinkVantage Password Manager  
The ThinkVantage Password Manager program automatically captures and fills in authentication information  
for Windows applications and Web sites.  
Notes:  
Chapter 1. Product overview  
 
5
   
• If the Password Vault icon in the Lenovo ThinkVantage Tools program is dimmed, it indicates that you  
need to install the ThinkVantage Password Manager program manually before enabling its features. To  
install the ThinkVantage Password Manager program, do the following:  
1. Click Start All Programs Lenovo ThinkVantage Tools, and double-click Password Vault.  
2. Follow the instructions on the screen.  
3. When the installation process completes, the Password Vault icon is activated.  
ThinkVantage Power Manager  
The ThinkVantage Power Manager program provides convenient, flexible, and complete power management  
for your ThinkCentre® computer. By using the ThinkVantage Power Manager program, you can adjust your  
power settings to achieve the best balance between system performance and power saving.  
ThinkVantage Rescue and Recovery  
The ThinkVantage Rescue and Recovery program is a one button recovery and restore solution that includes  
a set of self-recovery tools to help you diagnose computer problems, get help, and recover from system  
crashes, even if you cannot start the Windows operating system.  
Note: If the Enhanced Backup and Restore icon in the Lenovo ThinkVantage Tools program is dimmed, it  
indicates that you need to install the ThinkVantage Rescue and Recovery program manually before enabling  
its features. To install the ThinkVantage Rescue and Recovery program, do the following:  
1. Click Start All Programs Lenovo ThinkVantage Tools, and double-click Enhanced Backup  
and Restore.  
2. Follow the instructions on the screen.  
3. When the installation process completes, the Enhanced Backup and Restore icon is activated.  
ThinkVantage System Update  
The ThinkVantage System Update program helps you keep the software on your computer up-to-date by  
downloading and installing software packages (ThinkVantage applications, device drivers, BIOS updates,  
and other third party applications).  
Communication Utility  
The Communications Utility program provides a central location for integrated camera and microphone  
settings. It controls advanced settings for the integrated microphone and camera to optimize Web  
conferencing and Voice over IP (VOIP) experience.  
View Management Utility  
The View Management Utility program enables you to automate window locations. It enhances productivity  
by providing the ability to move windows to hot corners and quickly snap them to a predetermined size.  
It enables you to work across multiple monitors.  
Adobe Reader  
The Adobe Reader program is a tool used to view, print, and search PDF documents.  
Antivirus software  
Your computer comes with antivirus software that you can use to detect and eliminate viruses. Lenovo  
provides a full version of antivirus software on your hard disk drive with a free 30-day subscription. After 30  
days, you must renew the license to continue receiving the antivirus program updates.  
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Locations  
This section provides information to help you locate the connectors on the front and rear of your computer,  
parts on the system board, and components and internal drives in your computer.  
Chapter 1. Product overview  
7
 
 
Locating connectors, controls, and indicators on the front of your  
computer  
Figure 1 “Front connector, control, and indicator locations” on page 8 shows the locations of the connectors,  
controls, and indicators on the front of your computer.  
Figure 1. Front connector, control, and indicator locations  
1 Integrated Microphone  
6 Hard disk drive activity indictor  
7 Brightness-up / Auto-adjusting control 1  
8 Brightness-down control  
9 Foot stand  
2 Integrated camera indicator  
3 Integrated camera block shield  
4 Liquid crystal display (LCD) panel  
5 Power switch  
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Locating connectors on the rear of your computer  
Figure 2 “Rear connector locations” on page 9 shows the locations of the connectors on the rear of your  
computer. Some connectors on the rear of your computer are color-coded to help you determine where to  
connect the cables on your computer.  
Figure 2. Rear connector locations  
1 Optical drive  
7 Card reader  
2 USB connector (4)  
3 Power cord connector  
4 Ethernet connector  
5 Serial port  
8 USB connector  
9 Headphone connector  
10 Microphone connector  
11 USB connector  
6 DisplayPort connector  
Chapter 1. Product overview  
9
 
     
Connector  
Description  
Ethernet connector  
Used to attach an Ethernet cable for a local area network (LAN).  
Note: To operate the computer within FCC Class B limits, use a Category 5 Ethernet  
cable.  
USB connector  
Used to attach a device that requires a USB connector, such as a USB keyboard, a  
USB mouse, a USB scanner, or a USB printer. If you have more than six USB  
devices, you can purchase a USB hub, which you can use to connect additional  
USB devices.  
Microphone connector  
DisplayPort out connector  
Serial port  
Used to attach a microphone to your computer when you want to record sound or if  
you use speech-recognition software.  
Used to attach a high-performance monitor, a direct-drive monitor, or other devices  
that use a DisplayPort connector.  
Used to attach an external modem, a serial printer, or other devices that use a  
9-pin serial port.  
Adjusting the computer stand  
Your computer comes with a computer stand that you can use to adjust the computer to your comfortable  
position. Pull the stand open and adjust the position of the computer at an angle between 10° to 32°  
as shown in the following illustration.  
CAUTION:  
Make sure that the angle is at least 10° from the vertical; otherwise, the computer might be unstable  
and fall over.  
Figure 3. Adjusting the computer stand  
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Machine type and model label  
The machine type and model label identifies your computer. When you contact Lenovo for help, the machine  
type and model information helps support technicians to identify your computer and provide faster service.  
The following is a sample of the machine type and model label.  
Figure 4. Machine type and model label  
Chapter 1. Product overview 11  
 
 
12 ThinkCentre User Guide  
 
Chapter 2. Using your computer  
This chapter provides information on using some of the computer components.  
Frequently asked questions  
The following are a few tips that will help you optimize the use of your computer.  
Can I get my user guide in another language?  
The user guide is available in various languages on the Lenovo Support Web site at:  
http://www.lenovo.com/ThinkCentreUserGuides  
Where are my recovery discs?  
Lenovo provides a program that enables you to create recovery discs. For details about creating recovery  
discs, see “Creating recovery media” on page 33.  
Additionally, in case of a hard disk failure, you can order Product Recovery discs from the Lenovo  
Customer Support Center. For information about contacting the Customer Support Center, see Chapter  
11 “Getting information, help, and service” on page 69. Before using the Product Recovery discs, refer  
to the documentation that comes with the discs.  
Attention: A Product Recovery disc package might contain multiple discs. Make sure you have all of the  
discs ready before starting the recovery process. During the recovery process, you might be prompted  
to change discs.  
Where can I find help about the Windows operating system?  
The Windows Help and Support information system provides you detailed information about using the  
Windows operating system to help you get the most of your computer. To access the Windows Help and  
Support information system, click Start Help and Support.  
Using the keyboard  
Depending on your model, your computer comes with either a standard keyboard or a fingerprint reader  
keyboard. The Microsoft Windows shortcut keys are provided on both keyboard types.  
This section provides information about the following topics:  
“Using a fingerprint reader” on page 14  
Using Windows shortcut keys  
Both the standard keyboard and the fingerprint reader keyboard provide three keys you can use with your  
Microsoft Windows operating system.  
• The two Start menu keys are located beside the Alt key on either side of the spacebar. They feature the  
Windows logo. When you press either, the Windows Start menu opens. The style of the Windows logo  
varies depending on the keyboard type.  
• The context-menu key is located next to the Ctrl key on the right side of the Spacebar. Pressing the  
context-menu key opens the context menu for the active program, icon, or object.  
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Note: You can use the mouse or the Up and Down arrow keys to highlight menu selections. You can close  
the Start menu or the context menu by clicking the mouse or pressing Esc.  
Using the blue ThinkVantage button  
Some keyboards have a blue ThinkVantage button that you can use to open a comprehensive on-board  
help and information center from Lenovo.  
• If you are using the Windows 7 operating system, pressing the blue ThinkVantage button opens the  
Lenovo ThinkVantage Toolbox program.  
For more information about the Lenovo ThinkVantage Toolbox program, see “Lenovo ThinkVantage Toolbox”  
on page 68.  
Using a fingerprint reader  
Some computers might come with a keyboard that has a fingerprint reader. For more information about the  
fingerprint reader, see “Fingerprint Software” on page 5.  
To open the ThinkVantage Fingerprint Software program and use the fingerprint reader, click Start All  
Programs Lenovo ThinkVantage Tools Fingerprint Reader  
Follow the instructions on the screen. For additional information, refer to the ThinkVantage Fingerprint  
Software help system.  
Using the wheel mouse  
1 Wheel  
Use the wheel to control the scrolling action of the mouse. The direction in which you  
rotate the wheel controls the direction of the scrolling action.  
2 Primary mouse button  
Use this button to select or start a program or menu item.  
3 Secondary mouse button  
Use this button to display a menu for the active program, icon, or object.  
You can switch the function of the primary and secondary mouse buttons and change other default behavior  
through the mouse properties function in the Windows Control Panel.  
Adjusting audio  
Sound is an important part of the computer experience. Your computer has a digital audio controller built  
into the system board. Some models also have a high-performance audio adapter installed in one of the PCI  
card slots.  
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About your computer audio  
If a factory-installed, high-performance audio adapter is installed in your computer, the system-board  
audio connectors on the rear of the computer are typically disabled; use the connectors provided on the  
audio adapter.  
Each audio solution provides at least three audio connectors: audio line-in connector, audio line-out  
connector, and Microphone connector. On some models, a fourth connector is provided for the attachment  
of unpowered stereo speakers (speakers that do not require an ac power source). The audio adapter  
provides you with the ability to record and play back sound and music, as well as to enjoy sound with  
multimedia applications and work with speech-recognition software.  
Optionally, you can connect a set of powered stereo speakers to the audio line-out connector to enjoy  
better sound with multimedia applications.  
Setting the volume from the desktop  
The desktop volume control is accessible through the volume icon in the taskbar, which is located at the  
bottom-right corner of the Windows desktop. Click the volume icon and move the slider up or down to  
control the volume, or click the Mute icon to turn the audio off. If the volume icon is not in the taskbar, see  
Adding the volume icon to the taskbar  
To add the volume icon to the taskbar on the Windows 7 operating system, do the following:  
1. From the Windows desktop, click Start Control Panel Appearance and Personalization.  
2. In the Taskbar and Start Menu topic, click Customize icons on the taskbar.  
3. Click Turn system icons on or off and change the volume behaviors from Off to On.  
4. Click OK to save the new settings.  
Setting the volume from Control Panel  
You can set the computer volume from Control Panel. To set the computer volume from Control Panel,  
do the following:  
1. From the Windows desktop, click Start Control Panel Hardware and Sound.  
2. In the Sound topic, click Adjust system volume.  
3. Move the sliders up or down to raise or lower the volume of your computer.  
Using CDs and DVDs  
Your computer might have a DVD ROM drive or recordable DVD drive installed. DVD drives use  
industry-standard, 12 cm (4.75-inch) CD media or DVD media. If your computer comes with a DVD drive,  
the drive can read DVD-ROM discs, DVD-R discs, DVD-RAM discs, DVD-RW discs, and all types of CDs,  
such as CD-ROM discs, CD-RW discs, CD-R discs, and audio CDs. If you have a recordable DVD drive,  
it can also record on DVD-R discs, DVD-RW discs, type II DVD-RAM discs, CD-RW standard and high  
speed discs, and CD-R discs.  
Follow these guidelines when using the DVD drive:  
• Do not place the computer in a location where the drive is exposed to the following:  
– High temperature  
– High humidity  
– Excessive dust  
Chapter 2. Using your computer 15  
 
         
– Excessive vibration or sudden shock  
– An inclined surface  
– Direct sunlight  
• Do not insert any object other than a CD or DVD into the drive.  
• Before moving the computer, remove the CD or DVD from the drive.  
Handling and storing CD and DVD media  
CD and DVD media are durable and reliable, but they do require some care and special handling. When  
handling and storing a CD or DVD, follow these guidelines:  
• Hold the disc by its edges. Do not touch the surface of the side that is not labeled.  
To remove dust or fingerprints, wipe the disc with a clean, soft cloth from the center to the outside. Wiping  
the disc in a circular direction might cause loss of data.  
• Do not write or stick paper on the disc.  
• Do not scratch or mark the disc.  
• Do not place or store the disc in direct sunlight.  
• Do not use benzene, thinners, or other cleaners to clean the disc.  
• Do not drop or bend the disc.  
• Do not insert damaged discs into the drive. Warped, scratched, or dirty discs can damage the drive.  
Playing a CD or DVD  
If your computer comes with a DVD drive, you can listen to audio CDs or watch DVD movies. To play a  
CD or DVD, do the following:  
1. Press the Eject/Load button on the DVD drive to open the tray.  
2. With the tray fully extended, insert the CD or DVD into the tray. Some DVD drives have a snap hub in the  
center of the tray. If your drive has a snap hub, support the tray with one hand and then push on the  
center of the CD or DVD until it snaps into place.  
3. Press the Eject/Load button again or gently push the tray forward to close the tray. The CD or DVD  
player program starts automatically. For additional information, refer to the CD or DVD player program  
help system.  
To remove a CD or DVD from the DVD drive, do the following:  
1. With the computer on, press the Eject/Load button. When the tray slides out automatically, carefully  
remove the disc.  
2. Close the tray by pressing the Eject/Load button or by gently pushing the tray forward.  
Note: If the tray does not slide out of the drive when you press the Eject/Load button, insert a straightened  
paper clip into the emergency-eject hole located on the front of the DVD drive. Be sure the drive is powered  
off when using the emergency eject. Use the Eject/Load button instead of the emergency eject except  
in an emergency.  
Recording a CD or DVD  
If your computer comes with a recordable DVD drive, you can use the drive to record CDs or DVDs. To  
record a CD or DVD, do the following:  
1. Click Start All Programs Corel DVD MovieFactory Lenovo Edition.  
2. Follow the instructions on the screen.  
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For detailed information about using the Corel DVD MovieFactory program, see the help system for the  
program.  
You can also use Windows Media Player to record CDs and data DVDs. For more information, see “Help and  
Support” on page 69.  
Using the single-touch and multi-touch feature  
Note: The single-touch feature or multi-touch feature is only available on some computer models.  
Your computer might come with the single-touch feature or multi-touch feature depending on your model.  
If the single-touch feature or the multi-touch feature is available on your computer, you can tap the touch  
screen once with your finger to make a single click. To make a double-click, tap twice without pausing.  
To make a right-click, tap the touch screen once and then hold your finger on the touch screen until a  
round circle is displayed. Then, lift your finger off the touch screen. A context menu will be displayed,  
where you can make selections.  
Using the single-touch feature  
The single-touch feature enables you to use only one finger at a time to interact with your computer.  
Using the multi-touch feature  
The multi-touch feature enables you to use one or two fingers to interact with your computer. For example,  
you can zoom in, zoom out, scroll, or rotate on the touch screen with two fingers while browsing the Internet  
or reading or editing a document.  
The following table shows the supported touch feature on each operating system edition.  
Table 2. Operating system edition and supported touch feature  
Operating system edition  
Windows 7 Starter  
Supported touch feature  
Single-touch  
Single-touch  
Windows 7 Home Basic  
Windows 7 Home Premium  
Windows 7 Professional  
Windows 7 Ultimate  
Single-touch or multi-touch  
Single-touch or multi-touch  
Single-touch or multi-touch  
Color temperature adjustment  
The color temperature adjustment function enables you to adjust the color temperature and brightness of  
your computer monitor.  
Press the brightness-up button. The following six options are displayed:  
Auto adjustment: Select this option, and then the monitor color temperature and brightness will be  
adjusted automatically.  
Pre-defined color temperature: For detailed instructions, see “Selecting a pre-defined color  
temperature” on page 18.  
Switch to RGB adjustment: For detailed instructions, see “Switching to RGB adjustment” on page 18.  
Brightness adjustment: For detailed instructions, see “Making brightness adjustment” on page 18.  
Default setting: Select this option to use the default settings.  
Exit: Select this option to exit.  
Chapter 2. Using your computer 17  
 
   
Selecting a pre-defined color temperature  
To select a pre-defined color temperature, do the following:  
1. Press the brightness-up button. The following six options are displayed:  
Auto adjustment  
Pre-defined color temperature  
Switch to RGB adjustment  
Brightness adjustment  
Default setting  
Exit  
2. Press the brightness-down button to move to Pre-defined color temperature, and then press the  
brightness-up button to select one of the following options:  
Cold: If you select this option, your computer produces a gentle and blue-hued image.  
Normal: If you select this option, your computer produces a normal image.  
Warm: If you select this option, your computer produces a red-hued image.  
Exit: Select this option or wait for five seconds to exit .  
Switching to RGB adjustment  
After the pre-defined color temperature is selected, you can switch to RGB (Red, Green, or Blue) adjustment  
to make color adjustment for your computer.  
To switch to RGB adjustment, do the following:  
1. Press the brightness-up button. The following six options are displayed:  
Auto adjustment  
Pre-defined color temperature  
Switch to RGB adjustment  
Brightness adjustment  
Default setting  
Exit  
2. Press the brightness-down button to move to Switch to RGB adjustment, and then press the  
brightness-up button to bring up the following four options:  
Red-adjustment  
Green-adjustment  
Blue-adjustment  
Exit  
3. Press the brightness-down button to move to the desired option, and then press the brightness-up  
button to select the option. A color adjustment slider is displayed.  
4. Press the brightness-down button to decrease the color temperature, or press the brightness-up button  
to increase the color temperature.  
5. Select Exit or wait for five seconds, and then you will return to the previous menu.  
Making brightness adjustment  
To make brightness adjustment, do the following:  
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1. Press the brightness-up button. The following six options are displayed:  
Auto adjustment  
Pre-defined color temperature  
Switch to RGB adjustment  
Brightness adjustment  
Default setting  
Exit  
2. Press the brightness-down button to move to Brightness adjustment, and then press the brightness-up  
button. A brightness adjustment slider is displayed.  
3. Press the brightness-down button to decrease the brightness level, or press the brightness-up button to  
increase the brightness level.  
4. Wait for five seconds to exit.  
Chapter 2. Using your computer 19  
 
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Chapter 3. You and your computer  
This chapter provides information about accessibility, comfort, and relocating your computer to other  
countries or regions.  
Accessibility and comfort  
Good ergonomic practice is important to get the most from your personal computer and to avoid discomfort.  
Arrange your workplace and the equipment you use to suit your individual needs and the kind of work  
that you perform. In addition, use healthy work habits to maximize your performance and comfort while  
using your computer.  
The following topics provide information about arranging your work area, setting up your computer  
equipment, and establishing healthy work habits:  
Lenovo is committed to providing people with disabilities greater access to information and technology.  
As a result, the following information provides ways to help users that have hearing, vision, and mobility  
limitations get the most out of their computer experience.  
Assistive technologies enable users to access information in the most appropriate way. Some of these  
technologies are already provided in your operating system, others can be purchased through vendors, or  
accessed through the World Wide Web:  
http://www.lenovo.com/healthycomputing  
Arranging your workspace  
To get the most from your computer, arrange both the equipment you use and your work area to suit your  
needs and the kind of work you do. Your comfort is of foremost importance, but light sources, air circulation,  
and the location of electrical outlets can also affect the way you arrange your workspace.  
Comfort  
Although no single working position is ideal for everyone, here are a few guidelines to help you find a  
position that suits you best.  
Sitting in the same position for a long time can cause fatigue. The backrest and seat of your chair should  
adjust independently and provide good support. The seat should have a curved front to relieve pressure on  
the thighs. Adjust the seat so that your thighs are parallel to the floor and your feet are either flat on the  
floor or on a footrest.  
When using the keyboard, keep your forearms parallel to the floor and your wrists in a comfortable position.  
Use a light touch on the keyboard and your hands and fingers relaxed. Change the angle of the keyboard  
for maximum comfort by adjusting the position of the keyboard feet.  
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Adjust the monitor so the top of the screen is at, or slightly below, eye level. Place the monitor at a  
comfortable viewing distance, usually 51 to 61 cm (20 to 24 inches), and position it so you can view it  
without having to twist your body. Also, position other equipment you use regularly, such as the telephone or  
a mouse, within easy reach.  
Glare and lighting  
Position the monitor to minimize glare and reflections from overhead lights, windows, and other light sources.  
Reflected light from shiny surfaces can cause annoying reflections on your monitor screen. Place the  
monitor at right angles to windows and other light sources, when possible. Reduce overhead lighting, if  
necessary, by turning off lights or using lower wattage bulbs. If you install the monitor near a window, use  
curtains or blinds to block the sunlight. You can adjust the brightness and contrast controls on the monitor  
as the room lighting changes throughout the day.  
Where it is impossible to avoid reflections or to adjust the lighting, an antiglare filter placed over the screen  
might be helpful. However, these filters might affect the clarity of the image on the screen; try them only after  
you have exhausted other methods of reducing glare.  
Dust buildup compounds problems associated with glare. Remember to clean your monitor screen  
periodically using a soft cloth as directed in your monitor documentation.  
Air circulation  
Your computer and monitor produce heat. The computer has a fan that pulls in fresh air and forces out hot  
air. The monitor lets hot air escape through vents. Blocking the air vents can cause overheating, which might  
result in a malfunction or damage. Place the computer and monitor so that nothing blocks the air vents;  
usually, 51 mm (2 inches) of air space is sufficient. Also, make sure the vented air is not blowing on people.  
Electrical outlets and cable lengths  
The location of electrical outlets, the length of power cords and cables that connect to the monitor, printer,  
and other devices might determine the final placement of your computer.  
When arranging your workspace:  
• Avoid the use of extension cords. When possible, plug the computer power cord directly into an electrical  
outlet.  
• Keep power cords and cables neatly routed away from walkways and other areas where they might  
get kicked accidentally.  
For more information about power cords, see “Power cords and power adapters” on page iv.  
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Register your computer with Lenovo  
To register your computer, go to http://www.lenovo.com/register. Then, follow the instructions on the screen  
to complete the registration. This can help authorities return your computer to you if it is lost or stolen.  
Registering your computer also enables Lenovo to notify you about possible technical information and  
upgrades.  
When you register your computer, information is entered into a database, which enables Lenovo to contact  
you in case of a recall or other severe problem. In addition, some locations offer extended privileges and  
services to registered users.  
Moving your computer to another country or region  
When you move your computer to another country or region, you must take local electrical standards into  
consideration. This section provides information on the following:  
Voltage-selection switch” on page 23  
“Replacement power cords” on page 23  
Voltage-selection switch  
Some computers are equipped with a voltage-selection switch located near the power-cord connection  
point on the computer and some computers do not have a voltage-selection switch. Before you install  
your computer or relocate your computer to another country or region, you must be certain that you have  
matched your computer to the voltage available at your electrical outlet.  
CAUTION:  
You must know the voltage of the electrical connection (outlet) where your computer will be  
connected. If you do not know the voltage, contact your local electric company or refer to official  
Web sites or other literature for travelers to the country or region where you are located.  
If your computer has a voltage-selection switch, you must set the switch to match the voltage available at  
your electrical outlet. Setting the voltage-selection switch incorrectly will cause the computer to malfunction  
and might cause permanent damage to the computer. Do not connect the computer to an electrical  
outlet until you have verified that the voltage-selection switch setting matches the voltage available at the  
electrical outlets.  
If your computer does not have a voltage-selection switch, inspect the voltage-rating label on the bottom of  
the computer and note the following:  
• If the voltage-rating label shows a range of either “100-127 V” or “200-240 V,” you must ensure that the  
voltage provided at the electrical outlet matches the voltage rating on the computer label. If it does  
not match, do not attempt to connect the computer to the electrical outlet, unless an external device  
such as a voltage-converting transformer is used.  
• If the voltage-rating label shows a dual range of “100-127 V” and “200-240 V,” this signifies that the  
computer is suitable for worldwide operation and the computer will automatically adjust to the voltage at  
the electrical outlet regardless of the country or region where the computer is being connected.  
Replacement power cords  
If you relocate your computer to a country or region that uses an electrical outlet style different from the  
type you are currently using, you will have to purchase either electrical plug adapters or new power cords.  
You can order power cords directly from Lenovo.  
Chapter 3. You and your computer 23  
 
       
For power cord information and part numbers, go to:  
http://www.lenovo.com/powercordnotice  
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Chapter 4. Security  
This chapter provides information about how to protect your computer from theft and unauthorized use.  
Security features  
The following security features are available on your computer:  
• Computrace Agent software embedded in firmware  
The Computrace Agent software is an IT asset management and computer theft recovery solution.  
The software detects if changes have been made on the computer, such as hardware, software, or  
the computer call-in location.  
Note: You might have to purchase a subscription to activate the Computrace Agent software.  
• Ability to enable and disable devices and USB connectors  
For more information, see “Enabling or disabling a device” on page 43.  
• Integrated fingerprint reader (available on some models)  
Depending on the models of your computer, the keyboard may have an integrated fingerprint reader.  
By enrolling your fingerprint and associating it with a Power-on Password, a Hard Disk Password, or  
both passwords beforehand, you can start the computer, log on to the system, and enter the Setup  
Utility program by swiping your finger over the reader, without typing a password. Thus fingerprint  
authentication can replace passwords and enable simple and secure user access.  
• Startup sequence control  
For more information, see “Selecting or changing the startup device sequence” on page 43.  
• Startup without keyboard or mouse  
Your computer is able to log in to the operating system without keyboard or mouse connected.  
© Copyright Lenovo 2011  
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Attaching an integrated cable lock  
An integrated cable lock, sometimes referred to as the Kensington lock, can be used to secure your  
computer to a desk, table, or other non-permanent fixture. The cable lock attaches to the integrated cable  
lock slot at the rear of your computer and is operated with a key. The cable lock also locks the buttons used  
to open the computer cover. This is the same type of lock used with many notebook computers. You can  
order an integrated cable lock directly from Lenovo by searching for Kensington at:  
http://www.lenovo.com/support  
Figure 5. Integrated cable lock  
Using passwords  
You can set a variety of passwords through the Microsoft Windows operating system and through the BIOS  
of your computer to help deter unauthorized use of your computer.  
BIOS passwords  
You can use the BIOS Setup Utility program to set passwords to prevent unauthorized access to your  
computer and data. The following types of passwords are available:  
• Power-On Password: When a Power-On Password is set, you are prompted to type a valid password  
each time the computer is turned on. The computer cannot be used until the valid password is typed  
in. For more information, see “Power-On Password” on page 42.  
• Hard Disk Password: Setting a Hard Disk Password prevents unauthorized access to the data on the hard  
disk drive. When a Hard Disk Password is set, you are prompted to type a valid password each time you  
try to access the hard disk drive. For more information, see “Hard Disk Password” on page 42.  
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• Administrator Password: Setting an Administrator Password deters unauthorized users from changing  
configuration settings. If you are responsible for maintaining the configuration settings of several  
computers, you might want to set an Administrator Password. For more information, see “Administrator  
Password” on page 42.  
You do not have to set any passwords to use your computer. However, using passwords improves  
computing security.  
Windows passwords  
Depending on your version of the Windows operating system, you can use passwords for a variety of  
features, including controlling login access, access to shared resources, network access, and individual user  
settings. For more information, see “Help and Support” on page 69.  
Setting the fingerprint reader  
If your keyboard has a fingerprint reader, you can set the fingerprint reader in the Setup Utility program.  
The Fingerprint Setup submenu under the Security menu of the Setup Utility program provides the  
following options:  
Preboot Authentication: enables or disables the fingerprint reader function for entering BIOS password.  
Erasing Fingerprint Data: clears the fingerprint data stored in a fingerprint reader.  
To set an item on the Fingerprint Setup submenu, do the following:  
1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 41.  
2. From the Setup Utility program main menu, select Security Fingerprint Setup, and press Enter.  
The Fingerprint Setup window opens.  
3. Select Preboot Authentication or Erasing Fingerprint Date as desired, and press Enter.  
4. Select the desired settings and press Enter.  
5. Press F10 to save and exit the Setup Utility program. Press Enter when prompted to confirm the exit.  
Using and understanding firewalls  
A firewall can be hardware, software, or a combination of both depending on the level of security required.  
Firewalls work on a set of rules to determine which inbound and outbound connections are authorized. If  
your computer is preintalled with a firewall program, it helps protect against computer Internet security  
threats, unauthorized access, intrusions, and Internet attacks. It also protects your privacy. For more  
information about how to use the firewall program, refer to the help system of your firewall program.  
The Windows operating system preinstalled on your computer provides the Windows Firewall. For details on  
using the Windows Firewall, refer to “Help and Support” on page 69.  
Protecting data against viruses  
Your computer is preinstalled with an antivirus program to help you guard against, detect, and eliminate  
viruses.  
Lenovo provides a full version of antivirus software on your computer with a free 30-day subscription. After  
30 days, you must renew the license to continue receiving the antivirus software updates.  
Note: Virus definition files must be kept up-to-date to guard against new viruses.  
Chapter 4. Security 27  
 
       
For more information about how to use your antivirus software, refer to the help system of your antivirus  
software.  
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Chapter 5. Installing or replacing hardware  
This chapter provides instructions on how to install or replace hardware for your computer.  
Installing or replacing hardware  
This section provides instructions on how to install or replace hardware for your computer. You can expand  
the capabilities of your computer and maintain your computer by installing or replacing hardware.  
Attention: Do not open your computer or attempt any repair before reading and understanding the “Important  
safety information” on page iii.  
Notes:  
1. Use only computer parts provided by Lenovo.  
2. When installing or replacing an option, use the appropriate instructions in this section along with the  
instructions that come with the option.  
Installing external options  
You can connect external options to your computer, such as external speakers, a printer, or a scanner. For  
some external options, you must install additional software in addition to making the physical connection.  
When installing an external option, see “Locating connectors, controls, and indicators on the front of your  
computer” on page 8 and “Locating connectors on the rear of your computer” on page 9 to identify the  
required connector. Then, use the instructions that come with the option to help you make the connection  
and install any software or device drivers that are required for the option.  
Installing a computer wall mount  
Note: When installing a computer wall mount, make sure that you leave at least a 60 mm (2.36 inches) space  
between the wall and your computer for easy access to the connectors on the computer rear panel.  
Replacing the USB keyboard or mouse  
Attention: Do not open your computer or attempt any repair before reading and understanding the “Important  
safety information” on page iii.  
This section provides instructions on how to replace the USB keyboard or mouse.  
To replace the USB keyboard or mouse, do the following:  
1. Disconnect the old keyboard cable or mouse cable from the computer.  
© Copyright Lenovo 2011  
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2. Connect a new keyboard or mouse to one of the USB connectors on the computer. Depending on where  
you want to connect the new keyboard or mouse, see “Locating connectors, controls, and indicators on  
Figure 6. Connecting the USB keyboard or mouse  
Replacing the wireless keyboard  
To replace the wireless keyboard, do the following:  
1. Take away your failing wireless keyboard.  
2. Remove the new wireless keyboard from the package.  
3. Install the keyboard by opening the battery compartment cover and installing two AAA batteries  
according to the polarity indicators.  
Figure 7. Installing the keyboard batteries  
4. Remove the USB dongle from the keyboard compartment or from the wireless mouse compartment  
and connect it to an available USB connectors on the computer. See “Replacing the wireless mouse”  
on page 30.  
5. Close the compartment cover. The keyboard is ready for use.  
Replacing the wireless mouse  
To replace the wireless mouse, do the following:  
1. Disconnect the USB dongle from your computer. Then, take away your failing wireless mouse.  
2. Remove the new wireless mouse from the package.  
30 ThinkCentre User Guide