8-4 TroubleshootingDisplay ProblemsNothing appears on the screen. During operation, the screen may automatically turn off as a result ofpower management. Press any key to see if the screen comes back. The brightness level might be too low. Increase brightness. The display output might be set to an external device. To switch thedisplay back to the LCD, press the Fn+F9 hot key or change the displaythrough the settings in Display Properties.The characters on the screen are dim. Adjust the brightness and/or contrast.The display brightness cannot be increased. As a protection, the display brightness will be fixed at a low level whenthe surrounding temperature is too high or too low. It is not amalfunction in this situation.Bad dots appear on the display at all times. A small number of missing, discolored, or bright dots on the screen arean intrinsic characteristic of TFT LCD technology. It is not regarded as aLCD defect.Resolution cannot be adjusted to desired setting. Make sure that the VGA driver is installed correctly.The external monitor displays nothing. Make sure that the monitor is turned on. Make sure that the monitor’s signal cable is properly connected. Switch the display to the monitor by pressing the Fn+F9 hot key orchange the display through the settings in Display Properties.
