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Solution: The main hard disk drive is not working. Have the main hard disk drive serviced.
• Message: 2111: Read error on HDD1 (Ultrabay HDD)
Solution: The Ultrabay hard disk drive is not working. Have the Ultrabay hard disk drive serviced.
• Message: 2112: Read error on HDD2 (Mini SATA)
Solution: The Mini SATA device is not working. Have the Mini 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. Have the computer serviced.
• Message: Thermal sensing error
Solution: The thermal sensor is not functioning correctly. Shut down the computer immediately and
have the computer serviced.
• Message: The battery installed is not supported by this system and will not charge. Please replace the
battery with the correct Lenovo battery for this system. Press the ESC key to continue
Solution: Unauthorized battery is connected to the system. Press the ESC to continue
• Message: This system does not support batteries that are not genuine Lenovo-made or authorized. The
system will continue to boot, but may not charge unauthorized batteries.
Attention: Lenovo has no responsibility for the performance or safety of unauthorized batteries, and
provides no warranties for failures or damage arising out of their use.
Solution: Unauthorized battery is connected to the system. If you still see the same error message,
contact Lenovo for help.
Errors without messages
• Problem: My screen keeps blanking when I do not want it to.
Solution: You can disable any system timers, such as the LCD turn-off timer or the blank timer by
doing the following:
1. Click the battery gauge in the Windows notication area. Then click More power options ➙ Choose
when to turn off the display.
2. Change the settings as you desire by following the instructions on the screen.
• Problem: When I turn on the computer, nothing is displayed on the screen and the computer does not
beep while starting up.
Note: If you are not sure whether you heard any beeps, turn off the computer by pressing and holding the
power button for four seconds or more. Turn it on and listen again.
Solution: Ensure that:
– The battery is installed correctly.
90 User Guide