Lenovo 4089 User Manual

ThinkCentre User Guide

Machine Types:

0806, 0810, 0821, 0823, 0827, 0829, 0832, 0835, 0842, 0844, 0846, 0848, 0851, and 4089

ThinkCentre User Guide

Note

Before using this information and the product it supports, be sure to read and understand the ThinkCentre Safety and Warranty Guide and “Notices,” on page 69.

First Edition (August 2010)

LENOVO products, data, computer software, and services have been developed exclusively at private expense and are sold to governmental entities as commercial items as defined by 48 C.F.R. 2.101 with limited and restricted rights to use, reproduction and disclosure.

LIMITED AND RESTRICTED RIGHTS NOTICE: If products, data, computer software, or services are delivered pursuant a General Services Administration ″GSA″ contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-35F-05925.

Important safety information ......v

Chapter 1. Product overview ......1

Features ................1

Specifications ..............4

Software overview ............4

Software provided with your Windows operating

system ...............4

Locations ...............7

Locating connectors, controls, and indicators on

the front of your computer ........7

Locating connectors and parts on the rear of your

computer ..............8

Locating components ..........10

Locating parts on the system board .....11

Locating internal drives .........11

Chapter 2. Installing or replacing

hardware ..............13

Handling static-sensitive devices .......13

Installing or replacing hardware .......13

Installing external options ........14

Removing the computer cover .......14

Removing and reinstalling the front bezel . . . 15

Installing or replacing a PCI card ......17

Installing or replacing a memory module . . . 19

Replacing the battery ..........21

Replacing the power supply assembly....23

Replacing the heat sink and fan assembly . . . 25

Replacing the microprocessor .......27

Replacing the optical drive ........30

Replacing the hard disk drive .......31

Replacing the front audio and USB assembly . . 34

Replacing the rear fan assembly ......35

Replacing the USB keyboard or mouse ....36

Completing the parts replacement ......37

Obtaining device drivers ..........38

Basic security features ...........38

Integrated cable lock ..........39

Padlock...............40

Password protection ..........40

Erasing a lost or forgotten password (clearing

CMOS) ...............40

Chapter 3. Recovery information . . . 43

Creating and using recovery media ......43

Creating recovery media .........43

Using recovery media ..........44

Performing backup and recovery operations . . . 45

Performing a backup operation .......45

Performing a recovery operation ......45

Using the Rescue and Recovery workspace ....46

Creating and using a rescue medium ......47

Creating a rescue medium ........47

Using a rescue medium .........48

Installing or reinstalling device drivers .....49

Solving recovery problems .........49

Chapter 4. Using the Setup Utility

program ..............51

Starting the Setup Utility program .......51

Viewing or changing settings ........51

Using passwords ............51

Password considerations .........52

Power-on password ..........52

Administrator password .........52

Setting, changing, or deleting a password . . . 52

Enabling or disabling a device ........53

Selecting a startup device..........53

Selecting a temporary startup device .....53

Viewing or changing the startup device sequence 54

Exiting the Setup Utility program .......54

Chapter 5. Updating system programs 55

Using system programs ..........55

Updating (flashing) the BIOS from a disc ....55

Updating (flashing) the BIOS from your operating

system ................56

Recovering from a POST and BIOS update failure 56

Chapter 6. Troubleshooting and

diagnostic programs.........59

Basic troubleshooting ...........59

Diagnostic programs ...........60

Lenovo ThinkVantage Toolbox .......60

PC-Doctor for Rescue and Recovery .....60

PC-Doctor for DOS ...........61

Cleaning an optical mouse .........62

Chapter 7. Getting information, help,

and service .............63

Information resources ...........63

Online Books folder ..........63

Lenovo ThinkVantage Tools ........63

ThinkVantage Productivity Center ......64

Lenovo Welcome ...........64

Access Help .............64

Safety and warranty ..........64

Lenovo Web site (http://www.lenovo.com). . . 65

Help and service ............65

Using the documentation and diagnostic

programs ..............65

Calling for service ...........65

Using other services ..........66

Purchasing additional services .......67

Appendix. Notices ..........69

Television output notice ..........70

European conformance CE mark .......70

Trademarks ..............70

Index ...............71

User Guide

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 ThinkCentre Safety and Warranty Guide that you received with this product for the latest safety information. Reading and understanding this safety information reduces the risk of personal injury and or 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 site at: http://www.lenovo.com/support

Support Web

vi User Guide

Chapter 1. Product overview

This chapter provides information about the computer features, specifications, preinstalled software programs, and locations of connectors, components, parts on the system board, and internal drives.

This chapter contains the following topics:

v “Features”: This section provides information about the computer features.

v “Specifications” on page 4: This section lists the physical specifications for your

computer.

v “Software overview” on page 4: This section provides information about the

software programs provided with your computer.

v “Locations” on page 7: This section provides information to help you locate your

computer connectors, components, parts on the system board, and internal drives.

Features

This section provides information about the computer features.

System information

The following information covers a variety of models. For information about your specific model, use the Setup Utility program. See Chapter 4, “Using the Setup Utility program,” on page 51.

Microprocessor

Your computer comes with one of the following microprocessors (internal cache size varies by model type):

v Intel

Celeron®microprocessor

v Intel Celeron dual-core microprocessor

™

v Intel Core

2 Duo microprocessor

v Intel Core 2 Quad microprocessor

v Intel Pentium

dual-core microprocessor

Memory module(s)

v Supports up to two double data rate 3 dual inline memory modules (DDR3

DIMMs)

Internal drives

v Card reader (available in some models)

v Optical drive

v Serial Advanced Technology Attachment (SATA) hard disk drive

Video subsystem

v Integrated graphics card functioning through a Video Graphics Array (VGA)

connector

v Peripheral Component Interconnect (PCI) Express x16 graphics card slot on the

system board for a discrete graphics card

Audio subsystem

v Integrated high-definition (HD) audio

v Headphone connector and microphone connector on the front panel

v Audio line-in connector, audio line-out connector, and microphone connector on

the rear panel

Connectivity

v 10/100/1000 Mbps integrated Ethernet controller

System management features

v Ability to store the power-on self-test (POST) hardware test results

v Advanced Configuration and Power Interface (ACPI)

v Automatic power-on startup

v Desktop Management Interface (DMI)

v Intel Trusted Execution Technology (Intel TXT)

v Preboot Execution Environment (PXE)

v System Management (SM) Basic Input/Output System (BIOS) and SM software

v Wake on LAN (WOL)

v Windows Management Instrumentation (WMI)

(WMI is the infrastructure for management data and operations on Windows operating systems.)

Input/Output (I/O) features

v 9-pin serial port (one standard and one optional)

v Ethernet connector

v Six Universal Serial Bus (USB) connectors

(two USB connectors on the front panel and four USB connectors on the rear panel)

v Three audio connectors on the rear panel

(audio line-in connector, audio line-out connector, and microphone connector)

v Two audio connectors on the front panel

(headphone connector and microphone connector)

v VGA monitor connector on the rear panel

For more information, refer to “Locating connectors, controls, and indicators on the front of your computer” on page 7 and “Locating connectors and parts on the rear of your computer” on page 8.

Expansion

v One optical drive bay

v One slim card reader drive bay

v One PCI Express x1 card slot

v One PCI Express x16 graphics card slot

v Two hard disk drive bays

v Two PCI card slots

2 User Guide

Power supply

Your computer comes with one of the following power supplies:

v 280-watt auto-sensing power supply

v 280-watt power supply with a manual voltage-selection switch

v 320-watt auto-sensing power supply

Security features

v A power-on password and an administrator password to deter unauthorized use

of your computer

v Computrace

v Cover presence switch (also called intrusion switch) (available in some models)

v Enabling or disabling SATA devices

v Enabling or disabling the serial port

v Enabling or disabling USB connectors

v Keyboard with fingerprint reader (shipped with some models)

v Startup sequence control

v Startup without keyboard or mouse

v Support for the addition of an integrated cable lock (Kensington lock. See

“Integrated cable lock” on page 39 for more information.)

v Support for the addition of a padlock (see “Padlock” on page 40 for more

information)

Preinstalled software programs

Your computer is preinstalled with some software programs to help you work more easily and securely. For more information, see “Software overview” on page

Preinstalled operating system

Your computer is preinstalled with one of the following operating systems:

v Microsoft

v Microsoft Windows Vista

Windows®7

v Microsoft Windows XP Professional

(preinstalled through downgrade rights in Windows 7 Professional or Windows Vista Business)

Operating system(s), certified or tested for compatibility

v Linux

(varies by model type)

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

Specifications

This section lists the physical specifications for your computer.

Dimensions

Width: 160 mm (6.3 inches)

Height: 388 mm (15.28 inches)

Depth: 422 mm (16.61 inches)

Weight

Maximum configuration as shipped: 9.4 kg (20.72 lbs)

Environment

Air temperature:

Operating: 10° to 35°C (50° to 95°F)

Non-operating: -40° to 60°C (-40° to 140°F)

Non-operating: -10° to 60°C (14° 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

Voltage-selection switch setting: 115 V ac

High range:

Minimum: 200 V ac

Maximum: 240 V ac

Input frequency range: 50 to 60 Hz

Voltage-selection switch setting: 230 V ac

Software overview

The computer comes with a preinstalled operating system and several preinstalled applications.

Software provided with your Windows operating system

This section provides information about the software provided with your Windows operating system.

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 model type and preinstalled operating system.

4 User Guide

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. For more information, see “Lenovo ThinkVantage Tools” on page 63.

Note: The Lenovo ThinkVantage Tools program is only available on computers

with the Windows 7 operating system from Lenovo.

ThinkVantage Productivity Center: The ThinkVantage Productivity Center program guides you to a host of information sources and tools to help you set up, understand, and maintain your computer, and enhance your computer performance. For more information, see “ThinkVantage Productivity Center” on page 64.

Note: The ThinkVantage Productivity Center program is only available on

computers preinstalled with the Windows Vista operating system or the Windows XP operating system from Lenovo.

Lenovo Welcome: The Lenovo Welcome program introduces some innovative built-in features of Lenovo to you and guides you through some important setup tasks to help you make the most of your computer.

Note: The Lenovo Welcome program is only available on computers preinstalled

with the Windows 7 operating system or the Windows Vista operating system from Lenovo.

Product Recovery: The Product Recovery program enables you to restore the contents of the hard disk drive to the factory default settings.

ThinkVantage Rescue and Recovery: The ThinkVantage Rescue and Recovery

(RnR) 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.

Password Manager: The Password Manager program automatically captures and fills in authentication information for Windows applications and Web sites.

Note: The Password Manager program is only available on computers preinstalled

with the Windows 7 operating system from Lenovo.

ThinkVantage Client Security Solution: The ThinkVantage Client Security Solution (CSS) program helps you protect your information, including vital security information like passwords, encryption keys, and electronic credentials, while guarding against unauthorized user access to data.

Note: The ThinkVantage Client Security Solution program is only available on

computers preinstalled with the Windows Vista operating system or the Windows XP operating system from Lenovo.

Power Manager: The Power Manager program provides convenient, flexible, and complete power management for your ThinkCentre

computer. By using the Power Manager program, you can adjust your power settings to achieve the best balance between system performance and power saving.

ThinkVantage System Update: The ThinkVantage System Update (TVSU) program helps you keep the software on your computer up-to-date by downloading and installing software packages (ThinkVantage applications, device

Chapter 1. Product overview 5

drivers, BIOS updates, and other third party applications). Some examples of software that you should keep updated are programs provided by Lenovo, such as the Rescue and Recovery program and the ThinkVantage Productivity Center program.

Fingerprint Software: The integrated fingerprint reader provided on some keyboards works with the Fingerprint Software program to enable you to enroll your fingerprint and associate it with your Windows password. As a result, fingerprint authentication can replace your password and enable simple and secure user access. A fingerprint reader keyboard is available with certain 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. For more information, see “Lenovo ThinkVantage Toolbox” on page 60.

PC-Doctor for Rescue and Recovery

The PC-Doctor for Rescue and Recovery diagnostic program is preinstalled on your ThinkCentre computer as part of the Rescue and Recovery workspace to help you diagnose hardware problems. It can also report operating-system-controlled settings that interfere with the correct operation of your system. Use the PC-Doctor for Rescue and Recovery diagnostic program if you are unable to start the Windows operating system. For more information, see “PC-Doctor for Rescue and Recovery” on page 60.

Adobe Reader

The Adobe Reader program is a tool used to view, print, and search PDF documents.

See “Online Books folder” on page 63 for more information about accessing and viewing the publications.

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 computer with a free 30-day subscription. After 30 days, you must renew the license to continue receiving the antivirus software updates.

For more information about how to use your antivirus software, refer to the help system of your antivirus software.

6 User Guide

Locations

Locating connectors, controls, and indicators on the front of your computer

This section provides information to help you locate your computer connectors, components, parts on the system board, and internal drives.

Figure 1 shows the locations of the connectors, controls, and indicators on the front of your computer.

Figure 1. Front connector, control, and indicator locations

1 Hard disk drive activity indicator 5 USB connector 2 Power indicator 6 Headphone connector 3 Power switch 7 Microphone connector 4 Optical drive eject/close button 8 USB connector

Chapter 1. Product overview 7

Locating connectors and parts on the rear of your computer

Figure 2 shows the locations of the connectors and parts 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 and part locations

1 Voltage-selection switch (available on some models)

2 Power cord connector 9 PCI Express x16 graphics card slot 3 Serial port 10 PCI Express x1 card slot 4 VGA monitor connector 11 PCI card slots (2) 5 USB connectors (4) 12 Serial port (available on some models) 6 Microphone connector 13 Ethernet connector 7 Audio line-out connector 14 Personal System/2

8 Audio line-in connector

(PS/2®) keyboard and

mouse connector (available on some models)

8 User Guide

Connector Description

Audio line-in connector Used to receive audio signals from an external audio device,

such as a stereo system. When you attach an external audio device, a cable is connected between the audio line-out connector of the device and the audio line-in connector of the computer.

Audio line-out connector Used to send audio signals from the computer to external

devices, such as powered stereo speakers (speakers with built-in amplifiers), headphones, multimedia keyboards, the audio line-in connector on a stereo system, or other external recording devices.

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.

Microphone connector Used to attach a microphone to your computer when you want

to record sound or if you use speech-recognition software.

PS/2 keyboard connector (available on some models)

PS/2 mouse connector (available on some models)

Used to attach a keyboard that uses a PS/2 keyboard connector.

Used to attach a mouse, a trackball, or other pointing devices that use a PS/2 mouse connector.

Serial port Used to attach an external modem, a serial printer, or other

devices that use a 9-pin serial port.

USB connector Used to attach a device that uses a USB connector, such as a

USB keyboard, a USB mouse, a USB scanner, or a USB printer. If the USB connectors on your computer are not enough for you to connect all your USB devices, you can purchase a USB hub, which you can use to connect additional USB devices.

VGA monitor connector Used to attach a VGA monitor or other devices that use a VGA

monitor connector.

Chapter 1. Product overview 9

Locating components

Figure 3 shows the locations of the various components in your computer. To remove the computer cover and gain access to the inside of the computer, see “Removing the computer cover” on page 14.

Figure 3. Component locations

1 Heat sink and fan assembly 5 System board 2 Memory modules (2) 6 Rear fan assembly 3 Front bezel 7 Power supply assembly 4 Optical drive

10 User Guide

Locating parts on the system board

Figure 4 shows the locations of the parts on the system board.

Figure 4. System board part locations

1 Microprocessor 12 Front panel connector 2 Microprocessor fan connector 13 USB connectors (2) 3 Memory slots (2) 14 Serial (COM 2) connector 4 Thermal sensor connector 15 Front audio connector 5 24-pin power connector 16 Internal speaker connector 6 Parallel connector 17 PCI card slots (2) 7 Battery 18 PCI Express x1 card slot 8 Cover presence switch connector

(Intrusion switch connector) (some models)

9 SATA connectors (3) 20 System fan connector 10 Clear CMOS (Complementary Metal

Oxide Semiconductor) /Recovery jumper 11 Power fan connector 22 PS/2 keyboard and mouse connector

Locating internal drives

Internal drives are devices that your computer uses to read and store data. You can add drives to your computer to increase storage capacity and enable your computer to read other types of media. Internal drives are installed in bays. In this manual, the bays are referred to as bay 1, bay 2, and so on.

When installing or replacing an internal drive, it is important to note the type and size of the drive that you can install or replace in each bay and correctly connect the cables to the drive installed. Refer to the appropriate section in Chapter 2, “Installing or replacing hardware,” on page 13 for instructions on how to install or replace internal drives for your computer.

19 PCI Express x16 graphics card slot

21 4-pin power connector

Chapter 1. Product overview 11

Figure 5 shows the locations of the drive bays in your computer.

Figure 5. Drive bay locations

1 Bay 1 - Optical drive bay (with an optical drive installed) 2 Bay 2 - Slim card reader drive bay 3 Bay 3 - Primary SATA hard disk drive bay (with a 3.5-inch SATA hard disk drive

installed) 4 Bay 4 - Secondary SATA hard disk drive bay

12 User Guide

Chapter 2. Installing or replacing hardware

This chapter provides instructions on how to install or replace hardware for your computer.

This chapter contains the following topics:

v “Handling static-sensitive devices”

v “Installing or replacing hardware”

v “Obtaining device drivers” on page 38

v “Basic security features” on page 38

Handling static-sensitive devices

Do not open the static-protective package containing the new part until the defective part has been removed from the computer and you are ready to install the new part. Static electricity, although harmless to you, can seriously damage computer components and parts.

When you handle computer parts and components, take these precautions to avoid static-electricity damage:

v Limit your movement. Movement can cause static electricity to build up around

you.

v Always carefully handle the parts and other computer components. Handle PCI

cards, memory modules, system boards, and microprocessors by the edges. Never touch exposed circuitry.

v Prevent others from touching the parts and other computer components.

v Before you replace a new part, touch the static-protective package containing the

new part to a metal expansion-slot cover or other unpainted metal surface on the computer for at least two seconds. This reduces static electricity from the package and your body.

v Remove the new part from the static-protective package and directly install it in

the computer without placing it on any other surface. If it is hard for you to do this in your specific situation, place the static-protective package of the new part on a smooth, level surface, and then place the new part on the static-protective package.

v Do not place the part on the computer cover or other metal surface.

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 by adding memory modules, PCI cards, or drives, and maintain your computer by replacing the failing hardware.

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 install 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 you install an external option, see “Locating connectors, controls, and indicators on the front of your computer” on page 7 and “Locating connectors and parts on the rear of your computer” on page 8 to identify the required connector. Then, use the instructions that come with the option to help you make the connection and install software or device drivers that are required for the option.

Removing the computer cover

Attention

Do not open your computer or attempt any repair before reading and understanding the “Important safety information” in the ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkCentre Safety and Warranty Guide,goto: http://www.lenovo.com/support

This section provides instructions on how to remove the computer cover.

CAUTION:

Turn off the computer and wait three to five minutes to let the computer cool before removing the computer cover.

To remove the computer cover, do the following:

1. Remove all media from the drives. Then, turn off all attached devices and the

computer.

2. Disconnect all power cords from electrical outlets.

3. Disconnect the power cord, Input/Output (I/O) cables, and all other cables that

are connected to the computer.

4. Remove any locking device that secures the computer cover, such as an

integrated cable lock or a padlock. See “Integrated cable lock” on page 39 or “Padlock” on page 40.

14 User Guide

5. Remove the two screws that secure the computer cover and slide the computer

cover to the rear to remove it.

Figure 6. Removing the computer cover

Removing and reinstalling the front bezel

Attention

This section provides instructions on how to remove and reinstall the front bezel.

To remove and reinstall the front bezel, do the following:

1. Remove all media from the drives and turn off all attached devices and the

computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer.

2. Remove the computer cover. See “Removing the computer cover” on page 14.

Chapter 2. Installing or replacing hardware 15

3. Remove the front bezel by releasing the three plastic tabs on the left side and

pivoting the front bezel outward.

Figure 7. Removing the front bezel

4. To reinstall the front bezel, align the other three plastic tabs on the right side of

the front bezel with the corresponding holes in the chassis, then pivot the front bezel inward until it snaps into position on the left side.

16 User Guide

Figure 8. Reinstalling the front bezel

5. Go to “Completing the parts replacement” on page 37.

Installing or replacing a PCI card

Attention

This section provides instructions on how to install or replace a PCI card.

Your computer has one standard PCI card slot, two PCI Express x1 card slots, and one PCI Express x16 graphics card slot. See “Locating parts on the system board” on page 11.

To install or replace a PCI card, do the following:

1. Remove all media from the drives and turn off all attached devices and the

computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer.

2. Remove the computer cover. See “Removing the computer cover” on page 14.

3. At the rear of the computer, remove the screw that secures the PCI card latch.

Figure 9. Removing the screw that secures the PCI card latch

Chapter 2. Installing or replacing hardware 17

4. Do one of the following:

v If you are replacing a PCI card, open the PCI card latch and remove the old

PCI card that is currently installed as shown in Figure 10.

Note: If the PCI card is secured in place by a retaining latch 1, press the

retaining latch to release the PCI card from the latch. Then, grasp the PCI card by the edges and carefully pull it out of the slot. If necessary, alternate moving each side of the PCI card a small and equal amount until it is completely removed from the PCI card slot.

18 User Guide

Figure 10. Removing the PCI card

v If you are installing a PCI card, open the PCI card latch and remove the

appropriate PCI card slot cover. See “Locating parts on the system board” on page 11 to identify the types of PCI card slots.

5. Remove the new PCI card from its static-protective package.

+ 58 hidden pages

Lenovo 4089 User Manual

Contents

Important safety information

Chapter 1. Product overview

Features

Specifications

Software overview

Software provided with your Windows operating system

Software provided by Lenovo

Lenovo ThinkVantage Toolbox

PC-Doctor for Rescue and Recovery

Adobe Reader

Antivirus software

Locations

Locating connectors, controls, and indicators on the front of your computer

Locating connectors and parts on the rear of your computer

Locating components

Locating parts on the system board

Locating internal drives

Chapter 2. Installing or replacing hardware

Handling static-sensitive devices

Installing or replacing hardware

Installing external options

Removing the computer cover

Removing and reinstalling the front bezel

Installing or replacing a PCI card