Chapter 4. Troubleshooting
Troubleshooting -------------------------------------------------------------------------------------
Display problems
When I turn on the computer, nothing appears on the screen.
•If the screen is blank, make sure that:
-The battery pack 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 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, | • Restore | ||
only a white cursor appears on | the entire contents of your hard disk to its original factory | ||
a blank screen. | contents using the Lenovo OneKey Recovery System. If you | ||
| still see only the cursor on the screen, have the computer | ||
| serviced. |
| |
The screen goes blank while | • Your screen saver or power management may be enabled. | ||
the computer is on. | Do one of the following to exit from the screen saver or to | ||
| resume from sleep mode: | ||
| - Touch the touch pad. | ||
| - Press any key on the keyboard. | ||
| - Press the Power button. | ||
| - Press F9( |
| ) to confirm whether the backlight of the |
| LCD screen has been turned off. | ||
BIOS 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. |
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