Power turns on then immediately off

Apr 26, 2009

- Thanks for that. The switch is in the 115v mode. I should add that I have tried switching the Mobo into two different cases, one with the new 450W 24pin ATX PS, and the the other case which only had the 20pin molex but did have the additional 4pin that plugs in near the cpu. The mobo docs claim it can run with either the 24pin or the 20pin molex connector providing the 20pin comes with that other 4pin plug for near the cpu. I have removed power from all the drives, and pulled all the ram. Still powers then shuts off. Even the monitor gets a brief signal and turns the power from amber to green then back to amber. You can hear the monitor click on then back off. Is it possible the mobos bad?