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8-6 Troubleshooting
The brightness level might be too low. Increase brightness by pressing
Fn+F6.
The display output might be set to an external device. To switch the
display back to the LCD, press
Fn+F9, or change the display through
the settings in Display Properties.
Reset the computer by pressing Ctrl+Alt+Del keys.
Try turning the computer off, wait for a few seconds, then turn it back
on.
The characters on the screen are dim.
Adjust the brightness and/or contrast.
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. The Inspection Standard generally agreed
in the LCD industry allows a maximum of 8 bad dots on a unit.
Resolution cannot be adjusted to desired setting.
Make sure that the video driver and utility 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 Fn+F9, or change the
display through the settings in Display Properties.
Simultaneous display/multi-display does not work.
Make sure that you turn on the external monitor before turning on the
computer.
Press Fn+F9 to toggle through the display options or change the
settings in Display Properties in Windows.