I just did a new build and it's working awesome. Whisper quiet, fast, CPU, MB and HDD drive temp's very low because I got the High air flow computer case. No water cooling necessary, for now. That said, I'm having a problem. The darn thing won't shut off. I mean, it shuts down, the computer shuts down and the fans go off. But the other night I was crashing out (80's term for going to sleep), and I tossed my shirt on the chair by my desktop. Well, my aim wasn't that good that night and it hit the keyboard. Low and behold, the computer started firing up! What? I just shut that baby down 20 minutes ago. Sure enough, I tried it again and the same thing happened. I'm still with Windows 8.1 and in the pull down menu, I've got "sleep," "hibernate," "shutdown," and "restart." When I shut it down it really kind of acts like the sleep mode. I'd even settle for hibernate. So any guesses here?