I am repairing my friends computer, and i have run into some issues. When it starts up, it starts for about 1/8 of a second, and then powers off. Now, the Green light on the mobo is on when it is plugged in. When powered on, everything starts spinning and running for not even a second, and then just dies. I have tried the following- Switching out his DDr2 with my working DDR2 Trying my working PSU on his computer (it has sufficient power; 550W) Tried My working Video card on his Mobo Tried MY HDD on his mobo. How did it start? After i repaired a software issue with it, we walked it back down to his house. He lives about 10 min away. Once we got it there, this issue started happening. It was working perfectly fine before this. I had just installed a fresh copy of windows. What does this mean? A faulty motherboard? A faulty CPU? I can't imagine it being the Mobo, because all the power lights are on, and it does begin to start up. But then again..what else could it Be?