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.
First, set the ICC profile to sRGB Color Space Profile (Just in case if 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 =]