Univex 1665, 1962, 1966, 1942, 1837, 1782X01, 1741, 1762, 1738, 1654 USB problems, Diagnostic programs

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•If you received any error messages while using the software program, see the printed documentation supplied with the software or the help system for that software for a description of the messages and solutions to the problem.

•Check with your software manufacturer to see if any updates are available. Many software manufacturers make updates available from the World Wide Web.

•If the software program used to work correctly, but does not work correctly now, do the following:

– On the Windows 7 operating system, click Start ➙ Control Panel ➙ System and Security ➙ System ➙ System Protection ➙ System Restore.

•If you are unable to resolve the problem through other methods, uninstall the software program and reinstall it.

If these actions do not correct the problem, you might need technical assistance. Contact your software manufacturer or see Chapter 11 “Getting information, help, and service” on page 73 for details.

USB problems

Symptom: The USB connectors cannot be accessed.

Actions:

•Make sure the USB cable is securely connected to the USB connector and to the USB device. If the USB device has its own power cord, make sure it is attached to a properly grounded electrical outlet.

•If the USB device has its own On/Off switch, make sure it is in the On position.

•If the USB device has an Online switch, make sure it is in the Online position.

•If the USB device is a printer, make sure paper is loaded correctly.

•Make sure any device drivers or other software supplied with the USB device is correctly installed. Refer to the documentation for the USB device.

•Reset the device by detaching and reattaching the USB connector.

If these actions do not correct the problem, run the diagnostic programs to test the USB connector (see “Diagnostic programs” on page 69 for instructions). If the USB device came with its own diagnostics, run those diagnostics against the USB device. If you need technical assistance, see Chapter 11 “Getting information, help, and service” on page 73.

Diagnostic programs

Diagnostic programs are used to test hardware components of your computer. Diagnostic programs can also report operating-system-controlled settings that interfere with the correct operation of your computer. You can use the preinstalled diagnositc program to diagnose computer problems, if your computer is running the Windows operating system.

Notes:

1.Depending on the date when your computer was manufactured, your computer is preinstalled with either the Lenovo Solution Center program or the Lenovo ThinkVantage Toolbox program for diagnostic purposes. For more information about the Lenovo ThinkVantage Toolbox program, see “Lenovo ThinkVantage Toolbox” on page 70. For more information about the Lenovo Solution Center program, see “Lenovo Solution Center” on page 70.

2.You can also download the PC-Doctor for DOS diagnostic program from http://www.lenovo.com/support. See “PC-Doctor for DOS” on page 70 for detailed information.

Chapter 10. Troubleshooting and diagnostics 69

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Contents ThinkCentre User Guide Fourth Edition June Copyright Lenovo 2011 Contents Appendix A. Notices Appendix E. Energy Star model information Index Iv ThinkCentre User Guide Important safety information Service and upgradesStatic electricity prevention Extension cords and related devices Power cords and power adaptersPlugs and outlets External devicesHeat and product ventilation Operating environment Modem safety informationPower supply statement Cleaning and maintenanceLaser compliance statement ThinkCentre User Guide Product overview FeaturesColor temperature adjustment System management featuresInput/Output I/O features Power supplyPreinstalled operating system Preinstalled software programsSpecifications Software overviewSoftware provided by Lenovo Lenovo ThinkVantage Tools Lenovo Solution CenterLenovo Welcome Fingerprint SoftwareThinkVantage Password Manager Product RecoveryThinkVantage Power Manager ThinkVantage Rescue and RecoveryAdobe Reader Antivirus software ThinkVantage System UpdateLocations Communication UtilityFront connector, control, and indicator locations Rear connector locations Locating connectors on the rear of your computerConnector Description Adjusting the computer standMachine type and model label Machine type and model labelThinkCentre User Guide Frequently asked questions Using your computerUsing the keyboard Using Windows shortcut keysUsing the wheel mouse Using a fingerprint readerAdjusting audio About your computer audioSetting the volume from Control Panel Setting the volume from the desktopUsing CDs and DVDs Adding the volume icon to the taskbarUsing the single-touch and multi-touch feature Playing a CD or DVDRecording a CD or DVD Selecting a pre-defined color temperature Color temperature adjustmentUsing the single-touch feature Using the multi-touch featureSwitching to RGB adjustment Making brightness adjustmentRed-adjustment Green-adjustment Blue-adjustment Exit Using your computer ThinkCentre User Guide You and your computer Accessibility and comfortArranging your workspace ComfortGlare and lighting Air circulationElectrical outlets and cable lengths Replacement power cords Voltage-selection switchRegister your computer with Lenovo Moving your computer to another country or regionThinkCentre User Guide Security Security featuresUsing passwords Bios passwordsAttaching an integrated cable lock Setting the fingerprint reader Windows passwordsUsing and understanding firewalls Protecting data against virusesThinkCentre User Guide Installing or replacing hardware Installing or replacing hardwareInstalling external options Removing the monitor stand Replacing the USB keyboard or mouseConnecting the USB keyboard or mouse Replacing the wireless keyboardReplacing the wireless mouse Opening the battery compartment Obtaining device drivers Recovery information Creating and using recovery mediaCreating recovery media Using recovery media Performing backup and recovery operationsPerforming a backup operation Performing a recovery operation Using the Rescue and Recovery workspaceClick the Restore your system from a backup icon Creating and using a rescue medium Using a rescue mediumCreating a rescue medium Reinstalling preinstalled applications and device drivers Reinstalling preinstalled applicationsReinstalling preinstalled device drivers Reinstalling software programs Reinstalling device driversSolving recovery problems Recovery information ThinkCentre User Guide Using the Setup Utility program Starting the Setup Utility programViewing and changing settings Power-On Password Password considerationsAdministrator Password Hard Disk PasswordSelecting a startup device Enabling or disabling a deviceSelecting a temporary startup device Selecting or changing the startup device sequenceExiting from the Setup Utility program Using system programs Updating flashing the Bios from a discUpdating system programs Click Downloads and drivers Updating flashing the Bios from your operating systemUsing System Update Preventing problemsKeeping your computer current Getting the latest device drivers for your computerBasics Computer Cleaning your computerKeyboard Optical mouseGood maintenance practices Cleaning a glass-screen surfaceMoving your computer Basic troubleshooting Troubleshooting and diagnosticsTroubleshooting Troubleshooting procedureNo audio in Windows Audio problemsCD problems Sound comes from one external speaker onlyNo audio in DOS applications or games DVD problems CD or DVD does not workBlack screen instead of DVD video No audio or intermittent audio while playing DVD movie DVD movie will not playPlayback is very slow or choppy Invalid disc or no disc found messageIntermittent problems Keyboard, mouse, or pointing device problemsAll or some keys on the keyboard do not work Mouse or pointing device does not work Wireless keyboard does not workPointer on the screen does not move smoothly with the mouse Fingerprint reader does not workMonitor problems Wrong characters appear on the screenImage appears to be flickering Networking problems Ethernet problemsImage is discolored Your computer cannot connect to the network Wake on LAN feature is not workingClick Start Control Panel Click Hardware and Sound Adapter stops working for no apparent reasonWireless LAN problem Wireless WAN problemBluetooth problems An option that was just installed does not work Option problemsSound does not come from the Bluetooth headphone An option that previously worked does not work nowClick Disk Cleanup Performance and lockup problemsInsufficient free hard disk drive space Click Start ComputerPrinter problems Serial port problemsExcessive number of fragmented files Software does not work as expected Software problemsDiagnostic programs USB problemsCreating a diagnostic disc Lenovo Solution CenterLenovo ThinkVantage Toolbox PC-Doctor for DOSRunning the diagnostic program from a diagnostic disc ThinkCentre User Guide Getting information, help, and service Using the documentation and diagnostic program Help and serviceCalling for service Lenovo Support Web sitePurchasing additional services Using other servicesThinkCentre User Guide Appendix A. Notices Trademarks Export classification notice Appendix B. Regulatory informationTelevision output notice Electronic emissions noticesIndustry Canada Class B emission compliance statement Additional regulatory information ThinkCentre User Guide Appendix C. Weee and recycling information Important Weee InformationRecycling information Recycling information for Brazil Battery recycling information for TaiwanBattery recycling information for the European Union ThinkCentre User Guide Ukraine RoHS China RoHS Turkish RoHSIndia RoHS Windows 7 operating system Appendix E. Energy Star model informationThinkCentre User Guide Index Setting, changing, deleting Page 1P0B03427
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