It keeps freezing randomly, like I'll leave it on over night, everything closed the monitor is turned off then in the morning, I'll be on it for like 2 minutes and it will freeze. My keyboard and mouse both don't work either so I can't ctrl alt del to restart. I have to actually flick the switch on my power bar. It's been doing this since my dad put it together (8months ago). He's pretty good at doing things like that, but there were some parts he wasn't sure would work and put them in anyways. It actually just restarted itself... Can someone please help me figure this shit out?