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i have an HP dm3t notebook which normally comes with windows 7.
after some time i figured out how to install Windows XP on it.
but now i am facing a problem that the brightess controls dont work so i am unable to change the brightess.
the strange thing is that all the other buttons (sound volume, mute, sleep , etc... ) works but not the 2 brightess controls.
i already downloaded the "HP Quick Launch Buttons"
so i am asking about suggesitions how can i enable these two buttons in windows XP or even if i can change the brightess using some kind of software. thanks

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A few suggestions:

  • Update/install graphics drivers from the HP website.
  • Check the advanced tab in the graphics properties. Depending what kinda graphics card you have installed you can adjust color/brightness/contrast there.
  • Install an application to adjust screen brightness, google turns up a few.
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the first two method wont work since i need to adjust the hardware screen brightess , using the graphic driver wont be able to let the screen brightess high when the notebooki is outdoor since physically the brightess will be low. i will search google thought. – Karim Mar 24 '10 at 9:54
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