Screen resolution keep returning to 640*480 ???

Archived from groups: microsoft.public.windowsxp.video (More info?)

Hi, first just to tell you I've tried upgrading driver and it didnt help,
alsow the system is dual boot to win98 and no problem in win98 so I guess
it's not a physical problem. So here's the deal I have installed winXP pro
on a friend system, his video card is an "nvidia tnt2 M64", the system
screen was configured at 1024*768 for a week or so without a problem, but
then he decided that he didnt like that size so he went to change it to
800*600 but after that the screen got down to 640*480, now whatever screen
resolution I choose he keeps it for aroud 30-60 sec then goes back to
640*480. When I change the screen size I dont get the windows that pop out
to ask if i want to keep this settings, but after upgrading to the new
nvidia detonator driver, when i change it using nvidia taskbar icon i get
the message asking to keep resolution, but even with new driver if i use
display properties I dont get the confirmaton message. dont know if it can
make a difference but I'm saying since i found that strange, I also tried
uninstalling the video card with the driver and re-installing it, nothing
seem to fix it. Any idea are welcome.
Thanks in advance !!

Cividan
--
Never approach a PC thinking: This will only take a few minute!!!