I just finished putting my system together and yesterday it was fine. Today I downloaded speed fan from almico, and everything ran fine for about an hour. But now my computer won't boot up and if it even turns on it will only run for 5-10 minutes. What I'm wondering is if it's a PSU issue, mobo issue or software issue. The lights on my mobo work fine and I ran a test on the PSU about a week ago and it was working then. So I'm not to sure what the issue is.