Hmmmmm.......the CPU powers on with the 12v rail pulled? Is that what you are saying? You can't get video if you have no voltage supplied to the CPU!! Did yo put the 6 pin PCIe powere connector in the Video card? So you are telling me that you get a POST beep and no video wiht the 12v Rail pulled?
Noli Nothis Permittere Te Terere!!
EVGA 680i, Dual EVGA 8800GT'S (650/950), 4 gigs OCZ DDR2 1066, Intel Q9450 at 3.8 Ghz, Koolance Water Cooled, Dual Plextor16x DL DVD+/-RW. Dual WD 250gb 16mb Cache Sata 3.0. 3DMark06 score = 19,168.