Lenovo G485 Notebook - Manual (Page 41)

Chapter 5. Troubleshooting
37
Troubleshooting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Display problems
When I turn on the computer,
nothing appears on the screen. • 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 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 Fn+F2 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 HDD 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.