6.Shut down or restart your computer.

Error codes

The following table includes some of the more common error codes that might be displayed when your computer is performing the power-on self-test (POST).

vRecord error codes that are displayed. If you call for service, you will be asked for the error codes.

vIf there are multiple error codes, always work to solve problems in the order in which the error codes are displayed. Usually, solving the first error code will solve succeeding ones.

vIf the error code is not in the following table, more in-depth troubleshooting is required.

If the operating system starts when you turn on your computer, see “PC-Doctor for DOS Diagnostics” on page 25 to run diagnostics. Also, use the Access IBM program for more information on problem solving.

If the operating system will not start, have the computer serviced.

Code

Description

Action

 

 

 

135

Fan failure

Have the computer serviced.

 

 

 

162

A change in device

Verify that:

 

configuration occurred.

v All external devices are turned on.

 

 

v All devices are properly installed

 

 

and securely connected.

 

 

Reload the default configuration

 

 

settings using the Setup Utility.

 

 

If you cannot correct the problem,

 

 

have the computer serviced.

 

 

 

164

System memory size is less

Add more memory to your computer

 

than expected.

or use the Setup Utility to accept the

 

 

new memory amount.

 

 

If you cannot correct the problem,

 

 

have the computer serviced.

 

 

 

210 or 211

A keyboard error has occurred.

Verify that:

 

 

v The keyboard is properly

 

 

connected.

 

 

v No keys on the keyboard are stuck.

 

 

If you cannot correct the problem,

 

 

have the computer serviced.

 

 

 

Chapter 5. Troubleshooting and diagnostics

27

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Lenovo 8123, 8131, 8124, 8138, 8137, TC A51-8122 warranty Error codes, Code Description Action