Lenovo 59RF0176 manual Display problems, Password problems, Sleep problems

Chapter 4. Troubleshooting

Troubleshooting --------------------------------------------------------------------------

Display problems

When I turn on the computer,	•
nothing appears on the
screen.
	•
When I turn on the computer,	•
only a white cursor appears
on a blank screen.
My screen goes blank while	•
the computer is on.

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.

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.

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	• The battery power is getting low. Connect the AC adapter to
message appears, and the	the computer.
computer immediately turns
off.

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