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Chapter 4. Troubleshooting
Troubleshooting
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Display problems
When I turn on the computer,
nothing appears on the
screen.
If the screen is blank, make sure that:
- The AC adapter is connected to the computer and the power cord
is plugged into a working electrical outlet.
- The computer power is on. (Press the power button again for
confirmation.)
If these items are properly set, and the screen remains blank,
have the computer serviced.
When I turn on the computer,
only a white cursor appears
on a blank screen.
Restore the system partition to its original status or a
previously created back-up point using the OneKey
Recovery system. If you still see only the cursor on the
screen, have the computer serviced.
My screen goes blank while
the computer is on.
Your screen saver or power management may be enabled.
Do one of the following to exit from the screen saver or to
resume from sleep mode:
- Press any key on the keyboard.
- Press the power button.
-Press F9 to confirm whether the backlight for the LCD screen has
been turned off.
Password problems
I forgot my password. If you forget your user password, ask the system
administrator to clear your user password.
If you forget your hard disk drive password, a Lenovo
authorized servicer cannot reset your password or recover
data from the hard disk. You must take your computer to a
Lenovo authorized servicer or a marketing representative to
have the hard disk drive replaced. Proof of purchase is
required, and a fee will be charged for parts and service.
If you forget your supervisor password, a Lenovo
authorized servicer cannot reset your password. You must
take your computer to a Lenovo authorized servicer or a
marketing representative to have the system board
replaced. Proof of purchase is required, and a fee will be
charged for parts and service.
Sleep problems
The critical low-battery error
message appears, and the
computer immediately turns
off.
The battery power is getting low. Connect the AC adapter to
the computer.
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