Question about HP Compaq Presario F750US
Key pad key f 7, f 8 are not working.Not able to adjust the contrast and brightness of laptop screen.
Are you holding down your function key while pressing those corresponding keys?
You should see a key labeled "Fn" "F" or similar. It may also be labeled Mode.
It is generally "Fn" and blue.
Press and hold this key, and then press the F7 or F8 key repeatedly to adjust.
Hope this helps
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Posted on Apr 16, 2009
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Posted on Jan 02, 2017
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