Chapter 6. Troubleshooting

The computer does not

If your computer is in sleep mode, connect the AC

return from sleep mode and

adapter to the computer, then press any key or the

the computer does not

power button.

work.

If the system still does not return from sleep mode,

 

your system has stopped responding, and you cannot

 

turn off the computer; reset the computer. Unsaved

 

data may be lost. To reset the computer, press and

 

hold the power button for 4 seconds or more.

Display panel problems

The screen is blank.

Do the following:

 

- If you are using the AC adapter, or using the

 

battery, and the battery status indicator is on, press

 

F12 (

) to make the screen brighter.

 

- If the power indicator is in blinking, press the

 

power button to resume from the 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 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 4376XC3, 59359210, 4376XC5, U310 Touch, U410 Touch manual Display panel problems, Work

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