SOURCE: Unable to adjust the brightness of display screen
bright ness buttons are indicted witha sun like mark . they r usaly used with fn keys look for that keys
SOURCE: COMPAQ 7500 monitor, MenuBar/Brightness Bar, Keys not working
replace Menu buttons (Microswitches) and check 5v path
check dry points.
SOURCE: Problems changing the brightness
try using the fn key and the brightness keys at the top of keyboard
SOURCE: Screen Resolution stuck at 640 by 480
you first install the audio drivers if the problem persists then attach AGP card then increase resolution and pc will ask question do you want to keep these settings say yes then you can see 1280x1024
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