Lenovo 7064, 6177, 6176 Troubleshooting and diagnostics, Basic troubleshooting, Symptom Action

Page 23

Chapter 6. Troubleshooting and diagnostics

This chapter describes some basic troubleshooting and diagnostic programs. If your computer problem is not described here, see Chapter 8, “Getting information, help, and service,” on page 31 for additional troubleshooting resources.

Basic troubleshooting

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

Symptom	Action

The computer does not start	Verify that:
when you press the power	v The power cord is plugged into the rear of the computer and into a working
button.	electrical outlet.
	electrical outlet.
	v If your computer has a secondary power switch on the back of the computer,
	make sure that it is switched on.
	v The power indicator on the front of the computer is on.
	v The voltage is set to the correct setting for your country.
	If you cannot correct the problem, have the computer serviced. Refer to the
	safety and warranty information that is provided with your computer for a list of
	service and support telephone numbers.

The monitor screen is blank.	Verify that:
	v The monitor cable is securely attached to the rear of the monitor and to the
	rear of the computer.
	v The monitor power cord is plugged into the monitor and into a working
	electrical outlet.
	v The monitor is turned on and the brightness and contrast controls are set
	correctly.
	v The voltage is set to the correct setting for your country.
	v The monitor signal cable is securely connected to the monitor and to the
	monitor connector on the computer.
	Note: If your computer has two monitor connectors, verify that your monitor is
	connected to the option connector rather than the one in the rear of the system
	board. For more information, see "Connecting your computer" in the ThinkCentre
	Safety and Warranty Guide.
	If you cannot correct the problem, have the computer serviced. Refer to the
	safety and warranty information that is provided with your computer for a list of
	service and support telephone numbers.

© Copyright Lenovo 2008

15

Image 23

Contents Page Page ThinkCentre User Guide Page Contents Iv User Guide Introduction Vi User Guide Important safety information User Guide Features Features and specificationsInput/output features Weight SpecificationsDimensions Electrical input EnvironmentSoftware provided by Lenovo Software overviewSoftware provided with your Windows operating system Adobe Reader PC Doctor for Windows, PC Doctor for Windows PEUsing passwords Using the Setup UtilityStarting the Setup Utility program Viewing and changing settingsSetting, changing, and deleting a password Password considerationsUser Password Administrator PasswordSelecting or changing the startup device sequence Selecting a startup deviceSelecting a temporary startup device Exiting from the Setup Utility program Advanced settingsUpdating system programs Using system programsUpdating flashing Bios from a diskette or disc Recovering from a POST/BIOS update failure Updating flashing Bios from your operating systemSymptom Action Troubleshooting and diagnosticsBasic troubleshooting Diagnostic programs PC-Doctor for DOS PC-Doctor for WindowsPC-Doctor for Windows PE Running diagnostics from the Rescue and Recovery workspaceOptical mouse Cleaning the mouseNon-optical mouse Troubleshooting and diagnostics User Guide Creating and using Product Recovery discs Recovering softwarePerforming backup and recovery operations Using the Rescue and Recovery workspace Creating and using rescue media To use rescue media, do one of the following Creating and using a Recovery Repair disketteRecovering or installing device drivers Solving recovery problems Setting a rescue device in the startup sequenceUser Guide ThinkVantage Productivity Center Getting information, help, and serviceInformation resources Online Books folderSafety and Warranty Access HelpCalling for service Help and serviceUsing the documentation and diagnostic programs Purchasing additional services Using other servicesBasic AT commands Appendix A. Manual modem commandsInternal speaker on until carrier detected Low speaker volumeSet Pulse dial as default Set Tone Dial as defaultExtended AT commands MNP/V.42/V.42bis/V.44 commands Fax Class 2 commands Fax Class 1 commandsVoice commands Appendix A. Manual modem commands User Guide Appendix B. Notices Trademarks Television output noticeIndex Page Page User Guide Page Part Number 45C6524