Solution: Checksum of the supervisor password in the EEPROM is not correct. The system board should be
replaced. Have the computer serviced.
Message: 0182: Bad CRC of Security Settings in EEPROM. Enter ThinkPad Setup.
Solution: Checksum of the Security settings in the EEPROM is not correct. Enter ThinkPad Setup to
check Security settings, Press F10 and then press Enter to restart the system. If you still have a problem,
have the computer serviced.
Message: 0183: Bad CRC of Security Settings in EFI Variable. Enter ThinkPad Setup.
Solution: Checksum of the Security settings in the EFI Variable is not correct. Enter ThinkPad Setup to
check Security settings, Press F10 and then press Enter to restart the system. If you still have a problem,
have the computer serviced.
Message: 0187: EAIA data access error
Solution: The access to EEPROM is failed. Have the computer serviced.
Message: 0188: Invalid RFID Serialization Information Area.
Solution: The EEPROM checksum is not correct (block # 0 and 1). The system board should be replaced,
and the box serial number needs to be reinstalled. Have the computer serviced.
Message: 0189: Invalid RFID conguration information area
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 turned off, because the battery is low. Connect the AC adapter to the computer
and charge the battery.
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.
Message: 0192: System Security - Embedded Security hardware tamper detected.
Solution: The Security Chip has been replaced with a different one. Have the computer serviced.
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.
Message: 0251: System CMOS checksum bad
Solution: The system CMOS might have been corrupted by an application program. The computer uses
the default settings. Run ThinkPad Setup to recongure the settings. If you still see the same error code,
have the computer serviced.
Message: 0253: EFI Variable Block Data was destroyed.
Chapter 10. Troubleshooting computer problems 125