Lenovo 20AQ004JUS, 20AQ006HUS manual Errors without messages, Troubleshooting computer problems

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 configuration 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 configuration change has failed. Confirm 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. Confirm 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 fingerprint 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