I have a desktop PC. When I press the power button the hard drive activity light blinks and nothing else.
I have opened it up. there is a light on the motherboard labelled 5v that is constantly flashing.
I've reseated the memory and there are no PCI cards.
I ordered a new power supply and installed it. No difference.
Can anyone think of anything else that may be causing this? Will the motherboard need to be replaced?