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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 replace,
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 power 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 ThinkPad Setup.
• 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 ThinkPad Setup.
• Message: 1802: Unauthorized network card is plugged in - Power off and remove the network card.
Solution: The wireless network card is not supported on this computer. Remove it.
• Message: 1820: More than one external ngerprint readers are attached.
Solution: Power off and remove all but the reader that you set up within your main operating system.
• Message: 2100: Detection error on HDD0 (Main HDD)
Solution: The hard disk is not working. Have the hard disk serviced.
• Message: 2101: Detection error on HDD2 (M.2 SATA)
Solution: The M.2 SATA device is not working. Have the M.2 SATA device serviced.
• Message: 2102: Detection error on HDD2 (M.2 SATA)
Solution: The M.2 SATA device is not working. Have the M.2 SATA device serviced.
• Message: 2110: Read error on HDD0 (Main HDD)
Solution: The hard disk is not working. Have the hard disk serviced.
• Message: 2111: Read error on HDD2 (M.2 SATA)
Solution: The M.2 SATA device is not working. Have the M.2 SATA device serviced.
• Message: 2112: Read error on HDD2 (M.2 SATA)
Solution: The M.2 SATA device is not working. Have the M.2 SATA device serviced.
• Message: 2200: Machine Type and Serial Number are invalid.
Solution: Machine Type and Serial Number are invalid. Have the computer serviced.
• Message: 2201: Machine UUID is invalid.
Solution: Machine UUID is invalid. Have the computer serviced.
• Message: Fan error
Solution: Cooling fan has failed. Shut down the computer immediately and have the computer serviced.
• Message: Thermal sensing error
Solution: The thermal sensor has problem. Shut down the computer immediately and have the computer
serviced.
Errors without messages
• Problem: My screen keeps blanking when I do not want it to.
Chapter 10. Troubleshooting computer problems 125