I've paired a EX58-extreme with an Antec Neo HE550, 920 processor and three sticks of DDR3 2gb ram and an EVGA 9800 GT video card. I get a very loud whining sound when I power up - I assume the sound is coming from my power supply though it's really hard to tell. If I remove the video card and power-up it is silent and runs through a bunch of POST codes, ending in FF, which I think is normal behavior (no hd attached yet).
So I assumed the video was bad and replaced it with another, with the same whining sound again. Would the next guess be that my power supply is underpowered or bad? Any comments would be appreciated!