I just finished building my new computer and noticed that sometimes it wont boot up. The system powers on and the fans spin but nothing is displayed on the screen and no boot up sound from the computer speaker. Currently what I have to do to fix this is unplug the system and hope it turns on the next time I plug it in. I tried updating the BIOS on my ASUS P8P67 Pro but the problem still occurs.
I also don't think it is a problem with the power supply because it is brand new and works well when the computer boots up.