Computer crash, massive screen artifacting, infinite restart loop?

I was just playing Company of Heroes when my computer locked up and was filled with purple and red vertical lines, and massive artifacting. When I restarted, the opening black screen when first booting up was filled with random green squares and artifacting. All other screens have weird horizontal redish lines and other graphical glitches and are generally unviewable.

Now my computer is caught in an infinite restart loop, and generally won't get past the loading screen. I can get to the desktop if I boot in safe mode, however (still with graphical corruption).

Basically, it's completely messed up. Any help would be appreciated.

Thanks in advance.

Specs:

Windows XP 32 bit
Pentium 4 Single Core
Geforce 8800GT
3 GB RAM

How can we help with the limited information your giving??

You dont even list what power supply you have, which is the most important piece of information.

what were the temps on your card reading when you were playing a game? anything higher than 95C means you should check for lint on the card, if it hasn't fried yet.

Oh, it's really boring. Did you Use some tools to check it out? May be your computer had a virus, so ````
You can use kaspersky to scan your computer. Maybe this will fix.
Furthermore， some registry error also would result in those problems. Why not use Regestry Optimizer to ask for a help?