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Lenovo 1942, 1938, 1962, 1837, 1782, 1739, 1762, 1665, 1738, 1664 Second Edition October Copyright Lenovo

Models: 1677 1938 1741 1664 1739 1665 1762 1761 1782 1942 1837 1738 1962 1654 1763

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Note

Before using this information and the product it supports, be sure to read and understand the “Important safety information” on page iii and Appendix A “Notices” on page 73.

Second Edition (October 2011)

© Copyright Lenovo 2011.

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

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Lenovo 1942, 1938, 1962, 1837, 1782, 1739, 1762, 1665, 1738, 1664, 1763, 1741, 1677, 1761, 1654 Second Edition October Copyright Lenovo

Contents

ThinkCentre User Guide Second Edition October Copyright Lenovo Contents Appendix A. Notices 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 Viii ThinkCentre User Guide Features Product overview Input/Output I/O features System management featuresColor temperature adjustment Power supply Preinstalled software programs Preinstalled operating system Software provided by Lenovo SpecificationsSoftware overview Lenovo ThinkVantage Tools Product RecoveryThinkVantage Password Manager Lenovo Welcome Adobe Reader Antivirus software Locations Front connector, control, and indicator locations Locating connectors on the rear of your computer Rear connector locations Adjusting the computer stand Connector Description 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 Adjusting audio Using CDs and DVDs Setting the volume from the desktopSetting the volume from Control Panel Adding the volume icon to the taskbar Recording a CD or DVD Handling and storing CD and DVD mediaPlaying a CD or DVD Using the single-touch feature Using the single-touch and multi-touch featureColor temperature adjustment Using the multi-touch feature Making brightness adjustment Selecting a pre-defined color temperatureSwitching to RGB adjustment Red-adjustment Green-adjustment Blue-adjustment Exit Using your computer ThinkCentre User Guide Arranging your workspace Accessibility and comfortYou and your computer Comfort Electrical outlets and cable lengths Glare and lightingAir circulation Register your computer with Lenovo Voltage-selection switchReplacement power cords Moving your computer to another country or region ThinkCentre User Guide Security features Security Attaching an integrated cable lock Using passwordsBios passwords Using and understanding firewalls Windows passwordsSetting the fingerprint reader Protecting data against viruses ThinkCentre User Guide Installing external options Installing or replacing hardwareInstalling or replacing hardware Replacing the wireless keyboard Replacing the wireless mouse Opening the battery compartment Closing the battery compartment cover Obtaining device drivers 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 a rescue medium Creating and using a rescue mediumUsing a rescue medium Reinstalling preinstalled device drivers Reinstalling preinstalled applications and device driversReinstalling preinstalled applications Solving recovery problems Reinstalling software programsReinstalling device drivers Recovery information 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 Selecting a temporary startup device Enabling or disabling a deviceSelecting a startup device Selecting or changing the startup device sequence Exiting from the Setup Utility program Updating system programs Using system programsUpdating flashing the Bios from a disc Updating flashing the Bios from your operating system Click Downloads and drivers Keeping your computer current Preventing problemsUsing System Update Getting the latest device drivers for your computer Basics Keyboard Cleaning your computerComputer Optical mouse Moving your computer Good maintenance practicesCleaning a glass-screen surface Troubleshooting and diagnostics Basic troubleshooting Troubleshooting procedure Troubleshooting 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 Image appears to be flickering Monitor problemsWrong characters appear on the screen Image is discolored Networking problemsEthernet problems Click Start Control Panel Click Hardware and Sound Wake on LAN feature is not workingYour computer cannot connect to the network Adapter stops working for no apparent reason 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 An option that previously worked does not work now Insufficient free hard disk drive space Performance and lockup problemsClick Disk Cleanup Click Start Computer Excessive number of fragmented files Printer problemsSerial port problems Software problems Software does not work as expected USB problems Diagnostic programs Lenovo ThinkVantage Toolbox Creating a diagnostic discRunning the diagnostic program from a diagnostic disc PC-Doctor for DOS 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 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 informationImportant information for the European Directive 2002/96/EC ThinkCentre User Guide Index Optical mouse cleaning Password Administrator Considerations Page 0B03427