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Troubleshooting
If you do not find your problem here, refer to Access ThinkPad, your
on-board help system. Open Access ThinkPad by pressing the ThinkPad
button. The following section only describes problems that might prevent you
from accessing this help system.
Error messages
Note:
1. In the charts, x can be any character.
2. The version of PC-Doctor referred to here is PC-Doctor for
Windows.
Message Cause and action
0175: Bad CRC1, stop
POST task
The EEPROM checksum is not correct (block #6). Have the computer
serviced.
0187: EAIA data access
error
The access to EEPROM has failed. Have the computer serviced.
0188: Invalid RFID
serialization information
area or bad CRC2
The EEPROM checksum is not correct (block # 0 and 1, or block # 6). The
system board should be replaced, and the box serial number needs to be
reinstalled. Have the computer serviced.
0189: Invalid RFID
configuration
information area
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.
0190: Critical low-battery
error
The computer turned off, because the battery is low. Connect the ac adapter
to the computer and charge the battery pack, or replace the battery pack
with a fully charged one.
0200: Hard disk error The hard disk is not working. Make sure the hard disk drive is attached
firmly. Run the BIOS Setup Utility; then make sure the hard disk drive is
not disabled in the Startup menu.
021x: Keyboard error 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 first; 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:
v 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
does, have the external keyboard serviced.
v Make sure that the external keyboard is connected to the correct
connector.
Test the computer, using PC-Doctor.
v If the computer stops during the test, have the computer serviced.
Solving computer problems
Chapter 2. Solving computer problems 11