Was wondering if anyone could help me narrow down a problem im having. Recently my computer will freeze and the speakers will emit a low humming sound if its bumped or something hits the floor near it. I assume something is loose but im not sure what it is. I ran memory and harddrive diagnostics just to make sure those werent an issue and both of those passed. Im using the EVGA x58 3-way SLI mobo, bloomfield core i7 920, Antec Trupower 750W

I wouldnt know what to look for, I know what a blown cap looks like but aside from that >.< but you believe its on the mobo?

Not just the mobo, could be any number of things power wise, like PSU, GPU's things like that, do what RJ said, then if nothing take it all apart and inspect each thing, may not be a capacitor at all if it's booting to windows, not sure if you would even be able to power on if it was that.
 
Maybe a loose one though. Also when you put it back together, only do one thing at a time, like one set of ram at a time, one GPU at a time until you can recreate the issue. I'm no where near as literate as the rest of the guys on here so all of this is pretty much my best guess lol