Lenovo 3319, 3026, 3269, 3039, 5548, 5536, 5391 Troubleshooting and diagnostics, Basic troubleshooting

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Chapter 6. Troubleshooting and diagnostics

This chapter describes some basic troubleshooting and diagnostic programs. If your computer problem is not described here, see Chapter 7 “Getting information, help, and service” on page 51 for additional troubleshooting resources.

Basic troubleshooting

The following table provides information to help you troubleshoot your computer problems.

Note: If you cannot correct the problem, have the computer serviced. For a list of service and support telephone numbers, refer to the ThinkCentre Safety and Warranty Guide that comes with your computer or go to the Lenovo Support Web site at http://www.lenovo.com/support/phone.

	Symptom	Action

	The computer does not start	Verify that:
	when you press the power	• The power cord is correctly connected to the rear of the computer and to a
	switch.
	switch.	working electrical outlet.
		working electrical outlet.
		• If your computer has a secondary power switch on the rear of the computer,
		make sure that it is switched on.
		• The power indicator on the front of the computer is on.
		• The computer voltage matches the voltage available at the electrical outlet for
		your country or region.

	The monitor screen is blank.	Verify that:
		• The monitor signal cable is correctly connected to the monitor and to the
		appropriate monitor connector on the computer.
		• The monitor power cord is correctly connected to the monitor and to a working
		electrical outlet.
		• The monitor is turned on and the brightness and contrast controls are set
		correctly.
		• The computer voltage matches the voltage available at the electrical outlet for
		your country or region.
		• If your computer has two monitor connectors, be sure to use the connector
		on the graphics card.

	The keyboard does not work.	Verify that:
		• The computer is turned on.
		• The keyboard is securely connected to a USB connector on the computer.
		• No keys are stuck.

	The mouse does not work.	Verify that:
		• The computer is turned on.
		• The mouse is securely connected to a USB connector on the computer.
		• The mouse is clean. Refer to “Cleaning an optical mouse” on page 50 for further
		information.

© Copyright Lenovo 2010

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Contents ThinkCentre User Guide Page ThinkCentre User Guide First Edition October Copyright Lenovo Contents Appendix A. Notices Important safety information Viii ThinkCentre User Guide Product overview FeaturesPower supply Preinstalled software programs SpecificationsSoftware provided by Lenovo Software overviewThinkVantage Productivity Center Adobe Reader Locations Locating connectors on the front of your computerAntivirus software Connector Description Locating connectors on the rear of your computerComponent locations Locating componentsSystem board part locations Locating parts on the system boardDrive bay locations Locating internal drivesHandling static-sensitive devices Installing or replacing hardwareInstalling or replacing hardware Installing external optionsOpening the computer cover Accessing the system board components and drivesPivoting the optical drive bay assembly Installing or replacing a memory moduleOpening the retaining clips What to do next Installing or replacing a PCI cardRemoving a PCI card Installing the PCI card Replacing the batteryReplacing the hard disk drive Removing the old batteryRemoving the hard disk drive Replacing the optical drive Installing the hard disk driveRemoving the old optical drive Installing a new optical drive Replacing the power supply assemblyRemoving the retaining screws for the power supply assembly Replacing the heat sink Removing the power supply assemblyRemoving the heat sink Replacing the front audio and USB assembly Removing the front bezel Replacing the system fanRemoving the system fan Replacing the internal speakerRemoving the front bezel Removing the internal speaker Replacing the keyboard or mouse Installing the new internal speakerConnecting a new keyboard or mouse Completing the parts replacementIntegrated cable lock Installing security featuresErasing lost or forgotten passwords clearing Cmos Password protectionCreating and using recovery media Recovery informationCreating recovery media Performing backup and recovery operations Using recovery mediaPerforming a backup operation Using the Rescue and Recovery workspace Performing a recovery operationCreating a rescue medium Creating and using a rescue mediumInstalling or reinstalling device drivers Using a rescue mediumSolving recovery problems Using passwords Using the Setup UtilityStarting the Setup Utility program Viewing and changing settingsSetting, changing, and deleting a password Power-On PasswordAdministrator Password Hard Disk PasswordSelecting or changing the startup device sequence Exiting from the Setup Utility programSelecting a startup device Selecting a temporary startup deviceThinkCentre User Guide Updating flashing the Bios from a disc Using system programsUpdating system programs Recovering from a POST/BIOS update failure Updating flashing the Bios from your operating systemBasic troubleshooting Troubleshooting and diagnosticsLenovo ThinkVantage Toolbox Diagnostic programsPC-Doctor for DOS PC-Doctor for Rescue and RecoveryCleaning an optical mouse Lenovo ThinkVantage Tools Getting information, help, and serviceInformation resources Online Books folderSafety and Warranty Access HelpLenovo Welcome Using the documentation and diagnostic programs Help and serviceCalling for service Purchasing additional services Using other servicesAppendix A. Notices European conformance CE mark Trademarks Television output noticeCRU IndexRescue and Recovery workspace Page ThinkCentre User Guide Page 71Y7175