A friend states that his computer will not boot up, but fan on the power supply runs. So I got it today and it works fine for me, but when I shut it off the orange light on the front stays on and the power supply fan runs. I swapped out the power supply with a new one I had the problem still persists. Checked the Bios all fine there and change the RAM with some I had laying around. The motherboard looks fine no corosion on the capaciters. Any Ideas?