Video driver problems

Ok i have this problem where windows wont let me install
new video drivers. I just reinstalled windows because my
system kept crashing after the reinstall my video drivers
were gone and are not coming back. I downloaded the
newest ones and tryed installing them but i have had no
luck. The system bios still knows i have the video card
in there so i dont know what to do. Oh by the way i have
a GeForce 4 4200 with 8x AGP and vivo.

thanks
Derek