User's Manual

8-4 Troubleshooting
Display Problems
Display ProblemsDisplay Problems
Display Problems
Nothing appears on the screen.
 During operation, the screen may automatically turn off as a result of power
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 the display
back to the LCD, press the Fn+F5
Fn+F5Fn+F5
Fn+F5 hot key or change the display through the
settings in Display
DisplayDisplay
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 when the
surrounding temperature is too high or too low. It is not a malfunction in this
situation.
Bad dots appear on the display at all times.
 A small number of missing, discolored, or bright dots on the screen are an intrinsic
characteristic of TFT LCD technology. It is not regarded as a LCD defect.
Resolution cannot be adjusted to desired setting.
 Make sure that the VGA driver is installed correctly.
The external
The external The external
The external monitor displays nothing.
monitor displays nothing.monitor displays nothing.
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
FnFn
Fn+F5
F5F5
F5 hot key or change the
display through the settings in Display
DisplayDisplay
Display Properties.