Manuals / Lenovo / Computer Equipment / Personal Computer

Lenovo 3140, 7339, 5039, 5033, 3167, 3171, 3147, 3143 Locking the computer cover, Installing a padlock

Models: 3140 3176 3157 3134 3132 3154 3143 3147 3171 3167 5033 5039 7339

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Locking the computer cover

Locking the computer cover helps prevent unauthorized people from gaining access to the inside of your computer. Your computer comes with a padlock loop so that the computer cover cannot be removed when a padlock is installed.

Figure 7. Installing a padlock

26ThinkCentre User Guide

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Lenovo 3140, 7339, 5039, 5033, 3167, 3171, 3147, 3143, 3154, 3132, 3134, 3157, 3176 Locking the computer cover, Installing a padlock

Contents

ThinkCentre User Guide First Edition June Copyright Lenovo Contents Appendix A. Notices 111 Appendix C. Weee and recycling statements Iv ThinkCentre User Guide Static electricity prevention Important safety informationService and upgrades Power cords and power adapters Extension cords and related devices Heat and product ventilation Plugs and outletsExternal devices Modem safety information Operating environment Laser compliance statement Power supply statementCleaning and maintenance ThinkCentre User Guide Features Product overview Input/Output I/O features Expansion Preinstalled software programs Power supplySecurity features Preinstalled operating system Software provided by Lenovo SpecificationsSoftware overview Lenovo ThinkVantage Tools Product RecoveryThinkVantage Client Security Solution Lenovo Welcome Adobe Reader Antivirus software Locations Locating connectors on the rear of your computer Connector Description You use speech-recognition software Locating components Component locations Locating parts on the system board System board part locations Locating internal drives Drive bay locations Machine type and model label Machine type and model label ThinkCentre User Guide Using the keyboard Using your computerFrequently asked questions Using Windows shortcut keys Using the wheel mouse Using the blue ThinkVantage buttonUsing a fingerprint reader Setting the volume from Control Panel Adjusting audioSetting the volume from the desktop Adding the volume icon to the taskbar Playing a CD or DVD Using CDs and DVDsHandling and storing CD and DVD media Recording a CD or DVD ThinkCentre User Guide Arranging your workspace Accessibility and comfortYou and your computer Comfort Electrical outlets and cable lengths Glare and lightingAir circulation Moving your computer to another country or region Voltage-selection switchRegister your computer with Lenovo Replacement power cords Security features Security Installing a padlock Locking the computer cover Attaching an integrated cable lock Using passwordsBios passwords Using and understanding firewalls Windows passwordsConfiguring the fingerprint reader Protecting data against viruses Security ThinkCentre User Guide Installing external options Installing or replacing hardwareInstalling or replacing hardware Handling static-sensitive devices Removing and reinstalling the front bezel Removing the computer cover What to do next Removing the front bezel Accessing the system board components and drives Pivoting the drive bay assembly upward Installing or replacing a memory module Lowering the drive bay assembly Removing a memory module Installing or replacing a PCI card Installing a memory module Removing a PCI card Replacing the battery Installing a PCI card Removing the old battery Replacing the hard disk drive That secure the hard disk drive. Then, pivot the drive bay Installing or replacing the optical drive Connecting a Sata hard disk drive Removing the optical drive screws Slide the optical drive out of the front of the computer Installing a new optical drive Replacing the heat sink and fan assembly Connecting a Sata optical drive Removing the heat sink fan duct Removing the heat sink and fan assembly Replacing the power supply assembly Installing the heat sink fan duct Removing the heat sink fan duct Removing the power supply assembly Installing the power supply assembly Replacing the microprocessor Accessing the microprocessor Installing the microprocessor Replacing the front audio and USB assembly Removing the front audio and USB assembly Replacing the system fan assembly Removing the system fan assembly Replacing the keyboard Replacing the mouse Completing the parts replacement Mouse connectors Reinstalling the computer cover Obtaining device drivers ThinkCentre User Guide Creating recovery media Recovery informationCreating and using recovery media Performing a backup operation Using recovery mediaPerforming backup and recovery operations Click the Restore your system from a backup icon Performing a recovery operationUsing the Rescue and Recovery workspace Creating and using a rescue medium Creating a rescue medium Reinstalling preinstalled applications Using a rescue mediumReinstalling preinstalled applications and device drivers Reinstalling software programs Reinstalling preinstalled device drivers Reinstalling device drivers Solving recovery problems ThinkCentre User Guide Viewing and changing settings Using the Setup Utility programStarting the Setup Utility program Administrator Password Password considerationsPower-On Password Hard Disk Password Erasing lost or forgotten passwords clearing Cmos Enabling or disabling a device Selecting a temporary startup device Enabling ErP compliance modeSelecting a startup device Selecting or changing the startup device sequence Exiting the Setup Utility program ThinkCentre User Guide Updating system programs Using system programsUpdating flashing the Bios from a disc Click Download & Drivers Updating flashing the Bios from your operating systemRecovering from a POST/BIOS update failure Click Continue Turn on the computer to restart the operating system ThinkCentre User Guide Keeping your computer current Preventing problemsUsing System Update Getting the latest device drivers for your computer Click Start All Programs ThinkVantage Click System Update Basics Keyboard Cleaning your computerComputer Optical mouse Cleaning a glass-screen surface Good maintenance practicesCleaning a flat-panel monitor surface Moving your computer Preventing problems ThinkCentre User Guide Troubleshooting and diagnostics Basic troubleshooting System System Protection System Restore Troubleshooting procedureTroubleshooting Audio problems No audio in Windows No audio in DOS applications or games CD problemsSound comes from one external speaker only Black screen instead of DVD video DVD problemsCD or DVD does not work Playback is very slow or choppy DVD movie will not playNo audio or intermittent audio while playing DVD movie Invalid disc or no disc found message All or some keys on the keyboard do not work Intermittent problemsKeyboard, mouse, or pointing device problems Pointer on the screen does not move smoothly with the mouse Wireless keyboard does not workMouse or pointing device does not work Fingerprint reader does not work Monitor problems Wrong characters appear on the screen Image is discolored Networking problemsImage appears to be flickering Your computer cannot connect to the network Ethernet problemsWake on LAN feature is not working Click Start Control Panel Click Hardware and Sound Bluetooth problems Wireless LAN problemWireless WAN problem Sound does not come from the Bluetooth headphone Option problemsAn option that was just installed does not work Click Hardware and Sound Sound Insufficient free hard disk drive space Performance and lockup problemsAn option that previously worked does not work now Click Start Computer Click Disk Cleanup Click Clean up system files Programs and Features area, click the Clean up buttonClick Disk Cleanup Excessive number of fragmented files Click Defragment Now, then click Continue Printer problemsInsufficient memory Software does not work as expected Serial port problemsSoftware problems USB problems Diagnostic programs Lenovo ThinkVantage Toolbox Creating a diagnostic discRunning the diagnostic program from a diagnostic disc PC-Doctor for DOS ThinkCentre User Guide Getting information, help, and service Calling for service Help and serviceUsing the documentation and diagnostic programs Lenovo Support Web site Using other services Purchasing additional services ThinkCentre User Guide Appendix A. Notices 111 Trademarks Television output notice Appendix B. Regulatory informationExport classification notice Electronic emissions notices Industry Canada Class B emission compliance statement Additional regulatory information ThinkCentre User Guide Recycling information Appendix C. Weee and recycling statementsImportant information for the European Directive 2002/96/EC 117 ThinkCentre User Guide Index 119 PCI card 121 ThinkCentre User Guide Page 0B02835