Well, I think this might have been posted already, but I haven't gotten a definitive answer so I will describe my problem in detail.
As the title says, my P8P67 Pro is giving me some bizarre boot issues. After turning off my computer for the first time and turning it back on the next day, and then it wouldn't boot. My monitor would detect a connection but then go into sleep mode. I had to then turn my computer on and off a few times and finally got it to turn on. I then received an "Overclock Failed" message (even though I didn't overclock anything yet at this point) and then the system proceeded to boot normally. When researching this issue myself it seemed to be a memory issue, because my 1600 MHz memory gets detected as 1333 MHz (with correct timings). I then tried clocking it to 1600 MHz as well as changing the voltage but it didn't work consistently. Sometimes it would boot normally but other times (particularly when I moved my computer around to access the rear ports), it still experienced this issue. Hell, my computer once reset itself outright when I attempted to move it while it was on.
Now, I updated my BIOS to 1003 and the issue is slightly different. I haven't experienced the above issue, but now every time I turn my computer on, the fans spin up for a second, then it turns off. Then in a few seconds it turns itself on, with the CPU and DRAM LEDs flashing red for a split second and then booting normally. In every one of these instances, my computer has been stable, it only seems to be an issue with cold boots.
So are there any suggestions? It is a shame that I am having these issues because my CPU and SSD have been performing admirably so far.