Tried reinstalling the card? If that doesn't work, I have to suggest the
possibility that the card is simply "broken". But if you really want to be
sure, go into Safe Mode, then into Device Manager, and remove the video card
there. Reboot and perhaps the card will reinstall itself, perhaps it won't.
You'll probably get messages telling you that your video is having problems
and that you need to reinstall the card. Don't try to install it there, just
Cancel whatever you run into and get yourself to the Desktop. Then reinstall
the video adapter's software/drivers.

Note that the above procedure is often fraught with "issues". We can only
deal with them as they come up. But it is really necessary to first
reinstall the entire shebang, preferably after removing it in Safe Mode
Device Manager, before we can say for certain that the card itself is
perhaps bad. If you get to the point of having reinstalled the
software/drivers with no improvement, it's time to try a different card.
There *may* be other issues involving the motherboard to consider if a
different card produces similar errors.

--

Gary S. Terhune
MS-MVP Shell/User
http://grystmill.org/articles/cleanboot.htm
http://grystmill.org/articles/security.htm

"Frustrated Mom" wrote in message
...
My daughters computer was working fine with the Nvidia GE Force display
adapter then all of sudden the screen has become all garbled no matter
what I
do. Sometimes it won't even reboot. I have tried changing the graphics
acceleration, refresh rate everything I can think of. The settings appear
to
be stuck in 16 colors and 680x400. Any suggestions?