I had a old Asus P4PE motherboard laying around with a P4 processor that was taken out of a working PC. A friend of mine needed a cheap PC so I told him he could have my old parts. He went out and bought a new case and power supply and I put the MB in with his Cd Rom and new 300gb IDE hard drive. When I boot the PC up the HDD light comes on and stays on and the PC does nothing. I also noticed on this board that when you plug in the power cord there is a green light on the MB that comes on and when you turn the power switch on that light is supposed to get brighter but it never changes. Is it possible that the power supply is bad even though it turns on and powers everything up? I have put together quite a few PC' and never had one that wouldn't even boot to the Bios screen.