Lenovo Yoga 2 13 Notebook Lenovo User Manual download pdf (Page 34)

Chapter 4. Troubleshooting

The computer does not

return from sleep mode and

the computer does not

work.

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

power adapter to the computer, then press the

Windows button 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 eight seconds or more. If

the computer still does not reset, remove the AC

power adapter.

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 indicat or is blinking, press the Power

button to resume from sleep mode.

-Press F9 () to confirm whether the backlight

the LCD screen has been turned off.

-If the problem persists, follow the solution in the

next problem “The screen is unreadable or

distorted.”

The screen is unreadable or

distorted.

• Make sure that:

-The screen resolution and color quality are correctly

set.

-The monitor type is correct.

Incorrect characters appear

on the screen.

• Is the operating system or programs installed

correctly? If they are installed and configured

correctly, have the computer serviced.

Sound problems

No sound can be heard

from the speakers even

when the volume is turned

up.

• Make sure that:

-The Mute function is off.

-The combo audio jack is not being used.

- Speakers are selected as the playback device.

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Lenovo Yoga 2 13 Notebook Lenovo User Manual Page 34

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