Dell :: Changing Display Brightness

May 29, 2010

I am not able any longer to change the brigntness of the display via the known keys if the light sensor is deactivated.
If the light sensor is activated I can adjust the brightness but I do not like the sensor.

I can change the brightness without the sensor when I am in the BIOS and during windows is booting.

My system: Precision M4500 with Windows 7 Professional X64
.
The problem also occours with a fresh and pure Windows 7 Installation ..

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