A friend allowed his 4 year old to play on the keyboard of his PC and the kid changed the brightness of the screen so now it is way too bright to see properly. My friend said he saw the kid playing with the accessibility program and this may have caused it.

I've tried, changing the monitor settings (contrast/brightness), changing the video driver, changing the video display options and settings and nothing makes a difference. System Restore was turned off so I can't use that either.

The system is running XP home edition.

Any ideas?
Thanks in advance
Halder