Troubleshooting - Lenovo IdeaPad Y400 User Manual

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.
BIOS Password problems
I forgot my password.
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• If the screen is blank, make sure that:
- The battery is installed correctly.
- 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.)
- The memory is installed correctly.
• If these items are installed and configured correctly, have the
computer serviced.
• Restore backed-up files to your Windows environment or the entire
contents of your hard disk to the original factory contents using
OneKey Recovery. 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:
- Touch the touchpad.
- Press any key on the keyboard.
- Press the power button.
- Press Fn + F2 to confirm whether the LCD screen has been turned
off.
• If you forget your user password, you must ask the system
administrator to reset 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 administrator 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.
Chapter 4. Troubleshooting
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