It has been one thing after another with this motherboard. Last night I was playing some half life and Battlefield and finally starting to enjoy my new system. I put it on Stand By when I went to bed. I came home from work today and went to cut it on and got the windows logo on screen and then it blue screened on me with a message "DRIVER_IRQL_NOT_LESS_OR_EQUAL." I started disabling onboard devices and rebooting. . .no luck. Windows would start in safe mode at least though. Finally I pulled out my second 6600GT and the system in single gpu mode and it would boot normally. I switched the second card into the first slot and tried it alone. Still worked. So I put both back in and same problem. This just started happening out of nowhere!! ALL I did was turn on the computer!!! So I boot into safe mode, and uninstall the 2 cards in device manager. Then I reboot into normal mode and it starts up fine. I reinstall the 66.93 nVidia drivers and it promts me to reboot, so I do. Starts up fine. I enable GPU support in the display control panel and it prompts me to reboot again. So I do. Problem comes back!! If you ask me, this places the blame SQUARELY on nVidia's shoulders for shoddy, untested drivers! I don't know what I'll do next. . .maybe try and switch my Maxtor SATA drive to the Silicon Image controller so it won't disappear when I flash to the 1003 BIOS and try if that fixes it. . .Isn't this a sad state?? Anybody run into this problem or seen a solution to it?