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It is the inbuilt monitor menu. It just doesn't save what I set. How can I control the brightness from OS. I am on windows 7.

nvidia xfx 9500gt graphics card installed.

Thanks for help.

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up vote 2 down vote accepted

First, set the ICC profile to sRGB Color Space Profile (Just in case of any custom ICC profile affects DDC/CI, this avoids it.)

Second, reset your Philips!:

Menu -> Setup -> Reset -> (Yes)

If you see the brightness goes to 100 after reset, then you're in luck, go ahead and set a lower brightness =]

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