The power supply in my computer recently died and I ordered a Thermaltake TR2 600W to replace it. When I plug the power supply in, the power supply and cpu fans spin for about a second then everything shuts off. I've plugged the power supply into another computer, and everything works fine, with 2 hard drives, CD and nvidia 7900GTO video card plugged in. I tried the cheap 20$ no-name 450w power supply from that computer into mine and everything works fine, with 2 hard drives, 2 CD and a nvidia 8800GS video card plugged in. I stripped all possible components from this computer to only a single HD (the motherboard has an on-board video) and the Thermaltake power supply still only powers for about 1 second before sutting down. All tests were conducted from the same wall electrical outlet. Do you have any idea what might be causing this, why is the power supply working fine in one computer that requires a decent power load while nothing happens in the other computer even when the load is lightened to the max? Does the thermaltake power supply read error codes from the motherboard or some such and shut down while the cheap power supply just dumbly supply power? Thanks!