Lenovo IdeaPad Yoga 13 Посібник користувача - Сторінка 35

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The computer does not

return from sleep mode and

the computer does not

work.

Display panel problems

The screen is blank.

The screen is unreadable or

distorted.

Incorrect characters appear

on the screen.

• If your computer is in sleep mode, connect the AC

adapter to the computer, then press any key or the

power button.

• 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.

• 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.

• Make sure that:

- The display device driver is installed correctly.

- The screen resolution and color quality are correctly

set.

- The monitor type is correct.

• Are the operating system or programs installed

correctly? If they are installed and configured

correctly, have the computer serviced.

Chapter 4. Troubleshooting