I've just replaces my slow VIA MII12000 with the dual atom board from Intel. Worked like a charm until I had a bad connection for the +12v line. The power came and left a few times and now I think my M1-ATX PSU somehow killed the MB Now it won't even beep and I have a black screen. Power LED on the board is lit when you attach power and you can "start" it with the power switch and the CPU fan is spinning and it outputs 5 volts on the USB's but nothing else happens.
I now have it connected to a desktop ATX PSU with same result. My M1-ATX outputs 12v and 5v without poroblems so it seems to work too.