I have the same exact problems. I have the 71.84 drivers that I just recently installed over the previous ones. I then installed the WDM drivers. Everything worked until I rebooted. Kept on getting the blue screen of death for less than a fraction of a second. The computer would then reboot. I then had to go into safe mode and remove the WDM drivers. You think I should completely remove everything from Nvidia and reinstall both WDM and video card drivers? Is there a program to COMPLETELY remove Nvidia files? Any help would be appreciated. BFG FX5900 Win XP SP2