my dual computer is working fine for months. Today when I turn on computer, it hang up after the screen start up then forced me to turn off computer and after that I won't be able to log in, all I got is a blank screen after it ready log in. I am be able go to VGA mode or safe mode. I tried to remove video driver and re install driver still won't help. I put diff video card in and it works fine. The old TNT2 video card works OK on anther computer. My computer equipped with TNT2 video and dual III 550Mhz. Any idea? thanks

!!!!! Stop !!!!! Do not take anything else out of that unit. Put everything back the way it was. !!!! DO NOT TURN IT BACK ON !!!! Use a different computer and go to Steve Gibsons' CIH Recovery Page and download a copy of his "cih.exe". It may very easily be that you have acquired the chernoble virus. You have discribed it somewhat. Hopefully you havn't screwed with your unit so much that the HDD and MB are shot.

Thanks FJ, I did check the virus as you suggested and no virus found. The weird thing is I put in a diff AGP card and it works like a charm. Seem to me a corrupted setup file or need to delete a line in the registry file may allowing the system take a new driver update again. Anybody know what's going on?? thanks