I keep getting error boot failure detected upon turning computer on mostly, not restarting. Restarting seems to be fine most of the time. so I enter bios, go directly to "save and exit" without changing anything and it boots just fine. I have a 2600k oc'ed to 5.0ghz on water @ 1.5v. Temps idle are high 20s, prime95 temps at low 70s runs just fine for a few hours. Games play fine especially bf3 and dead island which seems to be extremely sensitive to overclocks for gpu and cpu. I have the f5 bios. Any ideas?