I have similiar problems... but my problems seem to be the total of all your problems...

I have BSOD of nv4_disp stuck in an infinite loop, my screen will hang when i tried to click on my games (mmorpg & PC) and my comp will auto restart. sometimes when i click on my games, my screen will flicker n show some distorted lines etc. I've tried all the ways to solve it. But it wasnt successful.

I tried these ways:
uninstall during safe mode n re-install using CD & latest drivers from the official website.
using driver cleaner to cleanup the mess before i re-install new drivers.
re-format my whole comp n more...

Can someone try to help me on this?

Im currently using Windows XP Pro SP2, nvdidia geforce fx 5500 with latest drivers 81.92 and if anyone wanna know more abt the specs tell me.. i try to find for u...

thanks!!!