Error Codes - Lenovo ThinkCentre M52 Quick Reference Manual

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).
v Record error codes that are displayed. If you call for service, you will be
asked for the error codes.
v If 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.
v If 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 27 to run diagnostics. Also, use
Access Help for more information on problem solving.
– If the operating system will not start, have the computer serviced.
Code Description
135 Fan failure
162 A change in device
configuration occurred.
164 System memory size is less
than expected.
210 or 211 A keyboard error has occurred.
Action
Have the computer serviced.
Verify that:
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.
Add more memory to your computer
or use the Setup Utility to accept the
new memory amount.
If you cannot correct the problem,
have the computer serviced.
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
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