Had this board since January. It's been fine until this evening when it wouldn't boot - everything powered up for a couple of seconds, then just turned off - too fast for anything to appear on screen. No bleeps, but the green power LED on the board is on. I have a 550w PSU and the processor is an X2 4600+. I disconnected everything, tried a different PSU (admittedly, only a 400w one from my spare machine) - but no change. I have 2x 1gb memory modules: tried them both, one-by-one and in different slots. No difference. Reading some of the posts here suggests this might be down to a BIOS problem - that seems likely to me as it doesn't even get that far. Suggestions as to what I can do gratefully received! Many thanks, Chris.