Lenovo U-550 Lenovo IdeaPad U550 UserGuide V1.0 - Page 62
Troubleshooting, Problems on changing graphics processing unit GPU, Con - hdmi
UPC - 884942567636
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Chapter 5. Troubleshooting My screen goes blank while • Your screen saver or power management may be the computer is on. 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 right-click on the • Check the graphics device setting in BIOS setup desktop, the Configure utility. In BIOS setup utility, move the cursor to Switchable Graphics Configuration, make sure Switchable Graphics option is not displayed on option is set active under Graphics Device. the pop up menu. Or when I slide and release the GPU switch on the front side of the computer, the • Check the operating system you are using. Switchable Graphics technology is currently available only on Windows Vista and Windows 7. Switchable Graphics dialog box is not displayed. 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. The system cannot be switched from highperformance GPU to power-saving GPU. • If you are outputting the screen to an external display through an HDMI cable, you might not be able to switch to power-saving GPU. Change the display device back to the LCD display of your notebook before you switch to power-saving GPU. 48