Originally Posted by SimpleTech
Your CPU has an integrated graphics chip meaning if you use a board with video ports you won't need to use a dedicated graphics card. But in your case you have one so it doesn't matter. What does matter though is diagnosing whether or not your video card is dead. It seems that you can boot fine with the onboard GPU meaning it's not a PSU problem. Re-check the power cable going to your video card and make sure it's plugged in all the way.
I do not follow the logic that if booting from onboard graphics is good the power supply is good.Onboard is limited to a set value through the PCIe slot and discrete needs the cable(s).Perhaps all is off the same rail but I never used this logic before as I was thinking onboard was not off the discrete gpu rail.
EDIT: It would be good to postively identify just what cable was hooked up that started this entire situation.A "six hole with only 5 used" does sound like a SATA (if we are looking at the power supply side of a modular cable).Was it correct to plug a SATA power cable into the device in question.Even if this was the correct cable is the receptacle keyed (at your device,not the power supply,100% it is keyed at the power supply)to maintain polarity? Reversing this cable will cause issues,hopefully issues that the power supply can protect its self from.Edited by PCCstudent - 10/6/12 at 10:56am