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Solution: The EEPROM checksum is not correct (block # 4 and 5). The system board should be replaced,
and the UUID needs to be reinstalled. Have the computer serviced.
• Message: 0190: Critical low-battery error.
Solution: The computer turns off, because the battery is low. Connect the ac power adapter to the
computer and charge the battery, or replace the battery with a fully charged one.
• Message: 0191: System Security - Invalid remote change requested.
Solution: The system conguration change has failed. Conrm the operation and try again. To clear the
error, enter the ThinkPad Setup program.
• Message: 0199: System Security - Security password retry count exceeded.
Solution: This message is displayed if you enter a wrong supervisor password more than three times.
Conrm the supervisor password and try again. To clear the error, enter the ThinkPad Setup program.
• Message: 0200: Hard disk error.
Solution: The hard disk is not working. Make sure the hard disk drive is attached rmly. Run the ThinkPad
Setup program; then make sure the hard disk drive is not disabled on the Startup menu.
• Message: 021x: Keyboard error.
Solution: Make sure that there are no objects placed on the keyboard, or if you have one, the external
keyboard. Turn off the computer, and turn off all attached devices. Turn on the computer rst; then
turn on the attached devices.
If you still see the same error code, do the following:
– If an external keyboard is connected, do the following:
– Make sure that the external keyboard is connected to the correct connector.
– Turn off the computer and disconnect the external keyboard; then turn on the computer. Make sure
that the built-in keyboard operates correctly. If it was, have the external keyboard serviced.
– Test the computer by using the Lenovo ThinkVantage Toolbox program. If the computer stops during
the test, have the computer serviced.
• Message: 0230: Shadow RAM error.
Solution: The shadow RAM failed. Test your computer memory with Lenovo ThinkVantage Toolbox. If
you added a memory module just before turning the computer on, reinstall it. Then test the memory with
Lenovo ThinkVantage Toolbox.
• Message: 0231: System RAM error.
Solution: The system RAM failed. Test your computer memory with Lenovo ThinkVantage Toolbox. If
you added a memory module just before turning the computer on, reinstall it. Then test the memory with
Lenovo ThinkVantage Toolbox.
• Message: 0232: Extended RAM error.
Solution: The extended RAM failed. Test your computer memory with Lenovo ThinkVantage Toolbox.
If you have added a memory module just before turning the computer on, reinstall it. Then test the
memory with Lenovo ThinkVantage Toolbox.
• Message: 0250: System battery error.
Solution: The backup battery, which is used to preserve the conguration information, such as the date
and time, while the computer is tuned off, is depleted. Replace the battery and run ThinkPad Setup to
verify the conguration. If you still have a problem, have the computer serviced.
116 User Guide