Asrock Extreme4 Z68 , Bios Ver. 1.7, Western Digital Hard Drive 1 TB, 16gb Corsair Vengence 9 9 9 24 1T, Windows 7 64 bit , two EVGA GTX470 video cards in SLI, 750 watt Pwr Sup. , Thermatake Bigwater 760 plus water cooling system for the GPUS , Corsair H100 water cooler for the CPU, one Patriot 64gb SSD Drive in raid 0 for SRT CPU 2600K 4.4ghz . My Two EVGA GTX-470 video cards keep losing the driver apon reboot every time !! Pls look at my post titled Asrock Extreme4 Keeps Losing Video Driver On Reboot for further details . And I am running the current 285.62 driver from Nvidia , but have tried other drivers before this one and the same thing occurs. I also have diabled IGN in the BIOS for onboard graphics,...and uninstalled the Intel onboard graphic driver as well , along with Vertu driver to see if that was causing a conflict , but it still keeps losing the Nvidia driver on reboot just the same . Any help would be greatly welcomed !! TY Blackhawk .