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Numeric error codes - ThinkPad General From IBM Web Site Notes:
· The most likely cause is listed first. · A numeric error is displayed for each error detected in POST or system operation. · In the displays, n can be any number
Symptom or error
Field replaceable unit or action, in sequence
Bad CRC1, stop POST task. The EEPROM checksum is not correct
This problem you may not be able to fix. There are a couple of things you can try.
1st Keep on rebooting your laptop until this error goes away.
2nd Replace the BIOS battery, it maybe nearly worn out. After replacement you need to go into the BIOS setting to set the Date & Time.
The CRC error (POST = power on startup test) on boot up refers to the BIOS settings. This could be cause by a near flat BIOS battery and it needs to be replaces. If it is not the battery you need go to the BIOS to correct any faulty settings.