Have a 650 Watt PSU....
Have tried Just GPU, Just Eth, Just USB.. none work..
I have a 4000D, but that said the rest of the cards won't work if the GPU isn't in there. But I'd re-seat the board to make sure it's in there. Also might need to recap your motherboard. After I did those two things, mine has been running like a champ, but would randomly do that before.
