I am having exact same problem as AfterBridge86. He tried a new OCZ PSU to get it to work and I tried a new K8N Neo 2 and it is still the same problem. Works a couple of hours thinking life is wonderful then suddenly it wont boot. It still boots with other PSUs... I have run across quite a few people with this problem... has anyone a solution for this problem??? Has anybody here good contact to MSI or something?? The thing driving me nuts is that both the K8N Neo 2 and the OCZ PowerStream works... but not together, it did at first but not anymore... its sensationell. Ive never ran across a problem like this one... is it bigger tha univers? I almost think so.....