Chapter 4. Troubleshooting

The computer does not

If your computer is in sleep mode, connect the AC

return from sleep mode,

power adapter to the computer and then press any

and the computer does not

key or the power button.

work.

If the system still does not return from sleep mode,

 

stops responding, or cannot be turned off, reset the

 

computer. Unsaved data may be lost. To reset the

 

computer, press and hold the power button for 4

 

seconds or more. If the computer is still not reset,

 

remove the AC power adapter and the battery.

Display panel problems

The screen is blank.

Do the following:

 

- If you are using the AC power adapter or the

 

battery and the battery status indicator is on, press

 

F12 (

) to make the screen brighter.

 

- If the power indicator is blinking, press the power

 

button to resume from sleep mode.

 

- If the problem persists, follow the solution in the

 

next problem “The screen is unreadable or

 

distorted.”

 

 

- Press F9 (

) to confirm whether the backlight for

 

the LCD screen has been turned off.

The screen is unreadable or distorted.

Make sure that:

-The display device driver is installed correctly.

-The screen resolution and color quality are correctly set.

-The monitor type is correct.

Incorrect characters appear

Are the operating system or programs installed

on the screen.

correctly? If they are installed and configured

 

correctly, have the computer serviced.

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Lenovo 59373039, 59373010, 59385443, 59373036, 59373044, 59373043 manual Display panel problems, Work

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