Hi, I have just bought the parts to my new computer. I have installed everything on the motherboard. Evidently, nothing is running. The fan isnt running, the CPU isnt running, NOTHING is running. The computer only worked ONCE when my knee accidentally bumped into the case and it miracously started running. After that, it couldnt run again. What could be the problem? Is it the motherboard, the power supply, or something shorted out? Please I need a answer, this problem is driving me crazy.