I built my own rig last Novmeber. It was working fine this morning when I went to work. I shut it down went I went to work. When I got home and powered it on. The the case fan and video card fans spin like normal. The heatsink fans sounds like it's spinning at maximum, it spins fast and creates a high pitch tone that's borderline annoying. I'm not sure what could have gone wrong. I check all the connections. The pc will power on and the fans will run at max and just sit there until I turn it off. No beeps from the mobo and nothing comes on my pc monitor. Anyone have any guesses before I take all the wiring out and try to plug everything back in?