Lenovo IdeaPad U460 Bedienungsanleitung PDF herunterladen (Seite 60)

Chapter 5. Troubleshooting

My screen goes blank while

the computer is on.

• Your screen saver or power management may be

enabled. Do one of the following to exit from the

screen saver or to resume from sleep or hibernation

mode:

- Touch the touchpad.

- Press any key on the keyboard.

- Press the power button.

-Press Fn+F2 to confirm whether the LCD screen

has been turned off.

Problems on changing graphics processing unit (GPU)

When I click the icon of

Graphics mode on the

taskbar, the Switchable

Graphics dialog box is not

displayed. Or when I press

the GPU switchable button

on the top of the keyboard,

the computer does not

respond.

• Check the graphics device setting in BIOS setup

utility. In BIOS setup utility, move the cursor to

Configuration, make sure Switchable Graphics

option is set active under Graphics Device.

• Check the operating system you are using.

Switchable Graphics technology is currently

available only on Windows 7.

The screen remains blank

when I try to switch the

GPU.

• Make sure your computer is not running an

exclusive mode Direct3D or OpenGL application. If

your computer is running either of the above

applications, quit the application before you switch

the GPU.

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Lenovo IdeaPad U460 Bedienungsanleitung Seite 60