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– Restore the system conguration to what it was before your computer entered hibernation mode.
– If the memory size has been changed, re-create the hibernation le.
• Message: Fan error
Solution: Cooling fan has failed. Have the computer serviced.
• 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. Press the ESC key to continue.
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: Replace the battery with the correct Lenovo battery for this computer. If you still see the same
error message, contact Lenovo service to 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: Replace the battery with the correct Lenovo battery for this computer. If you still see the same
error message, contact Lenovo service to have the computer serviced.
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
1. Start Power Manager.
2. Click the Power plan tab, and then select Maximum Performance from the predened power plans.
• Problem: When I turn on the machine, nothing appears on the screen and the machine 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: Make sure that:
– The battery is installed correctly.
– The ac power adapter is connected to the computer and the power cord is plugged into a working
electrical outlet.
– The computer is turned on. (Turn the power button on again for conrmation.)
If a power-on password is set:
– Press any key to display the prompt for the power-on password. If the brightness level of the screen is
low, increase it by pressing the Fn+F8 or Fn+F9.
– Type the correct password and press Enter (refer to “Using passwords” on page 49
).
If these items are properly set, and the screen remains blank, have the computer serviced.
• Problem: When I turn on the machine, only a white cursor is displayed on a blank screen.
Solution: If you have modied a partition on your hard disk drive or solid state drive by using a partition
software, information about that partition, or the master boot record may have been destroyed.
1. Turn off the computer, and then turn it on again.
2. If you still see only the cursor on the screen, do the following:
– If you have used the partition software, examine the partition on the hard disk drive or solid state
drive by using the software, and recover the partition if required.
Chapter 10. Troubleshooting computer problems 141