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• 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 the 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: Enter ThinkPad Setup to check the Security settings. Press F10 and then press Enter to
restart the system.
• Message: 0188: Invalid RFID Serialization Information Area.
Solution: The EEPROM checksum is not correct (block # 0 and 1). Reset the block # 0 and 1, for example
the box Serial Number, and/or block # 4 and 5, for example the UUID.
• Message: 0189: Invalid RFID conguration information area.
Solution: The EEPROM checksum is not correct (block # 4 and 5). Reset the block # 0 and 1, for example
the box Serial Number, and/or block # 4 and 5, for example the UUID.
• 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.
• Message: 0191: System Security - Invalid remote change requested.
Solution: Bad system conguration change request has been detected, for example, the BootBlock
update has failed or unknown request packet has been detected. 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: 1802: Unauthorized network card is plugged in - Power off and remove the network card.
Solution: The Mini PCI Express network card is not supported on this computer. Remove it.
• Message: 1820: More than one external ngerprint readers are attached. Power off and remove all but
the reader that you set up within your main operating system.
Solution: There are more than one external ngerprint readers. Power off and remove all but the reader
that you set up within your main operating system.
• 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.
Solution: The system EFI Variable Block Data might have been corrupted.
• Message: 0271: Date and time error.
Solution: Neither the date nor the time is set in the computer. Enter ThinkPad Setup to set the date and
time.
• Message: ThinkVantage Active Protection sensor diagnostics failed.
Chapter 9. Troubleshooting computer problems 109