I'm having a very strange issue with a machine I built recently. Almost every time I enter the room and walk towards my computer when it is powered on, it restarts. When it restarts, the fans rev up to 100% quickly then go back down and repeat ad nauseum (basically an infinite restart loop). I've moved it from across the room and changed power outlets to see if that was the problem, but it wasn't. I've looked at temps inside my machine and they all seem within normal range, so I don't think that overheating is the problem. I can't recreate the problem by shaking the machine or jumping on the floor beside it. It only occurs when I walk toward the computer and get near it. I'm out of ideas as to what could be causing this. Any help/troubleshooting advice would be appreciated.