Chapter 7. Troubleshooting and diagnostic programs

This chapter provides information about some basic troubleshooting and diagnostic programs. If your computer problem is not described in this chapter, see Chapter 8, “Getting information, help, and service,” on page 71 for additional troubleshooting resources.

This chapter contains the following topics:

v“Basic troubleshooting”

v“Diagnostic programs” on page 68

v“Cleaning an optical mouse” on page 69

Basic troubleshooting

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

Note: If you cannot solve the problem after doing the basic troubleshooting, have

 

the computer serviced. Refer to the ThinkStation Safety and Warranty Guide

 

that came with your computer for the safety and warranty information and

 

the list of Lenovo Support telephone numbers.

 

 

 

Symptom

 

Action

 

 

 

The computer does not start

 

Verify that:

when you press the power

 

v The power cord is correctly connected to the rear of the computer and to a

switch.

 

working 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 for

 

 

your 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 a

 

 

working electrical outlet.

 

 

v The computer voltage matches the voltage available at the electrical outlet for

 

 

your country or region.

 

 

v The brightness and contrast controls are set correctly.

The USB keyboard or mouse

 

Verify that:

does not work.

 

v The computer is turned on.

 

 

v The keyboard or mouse is correctly connected to one of the USB connectors on

 

 

the computer.

 

 

v For the keyboard, no keys are stuck.

 

 

v The mouse is clean. Refer to “Cleaning an optical mouse” on page 69.

The operating system does not

 

Verify that you list the device where the operating system resides in the startup

start.

 

device sequence. Usually, the operating system is on the hard disk drive. For

 

 

more information, see “Selecting a startup device” on page 55.

 

 

 

The computer beeps multiple

 

Verify that no keys are stuck.

times before the operating

 

 

system starts.

 

 

 

 

 

© Copyright Lenovo 2010

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Lenovo 4266, 4271, 4272, 4269, 4265, 4264, 4263 manual Troubleshooting and diagnostic programs, Basic troubleshooting

4263, 4266, 4264, 4265, 4269 specifications

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