Lenovo 0401R6U User Manual

Also see for 0401R6U: Specifications

Contents

Chapter 6. Troubleshooting and diagnostic programsThis chapter provides information about some basic troubleshooting and diagnosticprograms. If your computer problem is not described in this chapter, see Chapter 7,“Getting information, help, and service,” on page 33 for additional troubleshootingresources.This chapter contains the following topics:v “Basic troubleshooting”v “Diagnostic programs” on page 28v “Cleaning the mouse” on page 30Basic troubleshootingThe following table provides some basic information to help you troubleshoot yourcomputer problems.Note: If you cannot solve the problem after doing the basic troubleshooting, havethe computer serviced. Refer to the ThinkCentre Safety and Warranty Guidethat came with your computer for the safety and warranty information andthe list of Lenovo Support telephone numbers.Symptom ActionThe computer does not startwhen you press the powerswitch.Verify that:v The power cord is correctly connected to the rear of the computer and to aworking electrical outlet.v The power indicator on the front of the computer is on.v The computer voltage matches the voltage available at the electrical outlet foryour country or region.The monitor screen is blank. Verify that:v The power cord is correctly connected to the rear of the computer and to aworking electrical outlet.v The computer voltage matches the voltage available at the electrical outlet foryour country or region.v The brightness and contrast controls are set correctly.The USB keyboard or mousedoes not work.Verify that:v The computer is turned on.v The USB keyboard or mouse is correctly connected to one of the USBconnectors on the computer.v For the USB keyboard, no keys are stuck.v The USB mouse is clean. Refer to “Cleaning the mouse” on page 30.© Copyright Lenovo 2010 27