I ran a test on the PSU on my Lenovo Think Centre M52 8215 which won't power up any longer. It seems that while the ATX plug tests good, none of the others do. I would just assume that means that the PSU is bad, but what throws me is that I would have thought that at least the case fans would spin with just the power through the ATX cable. I've checked to power switch circuits by crossing the pins on the motherboard, and it still doesn't power on, so obviously that isn't the problem. The only question is the one mentioned in the first paragraph...should the case fans spins with just the ATX power, if there wasn't some kind of problem outside of the PSU?