I had setup the new Harddrive and got programs I wanted and stuff, updates, drivers. and after awhile it shuts off. I then went through so many steps of unhooking anything not 100% necessary and it still did it. I cleaned the case and was plugging in my HDMI cord and couldnt find the plug. I look down and I miss the plug and hit the case. a small spark comes off the case. (the computer was not on but was plugged in.) I unplug it clean out a old case, put standoffs in and the backplate, (some of the backplate things were bent inward and I feel it was causing it to short touching something.) I put it all back in and have been using it for 3 hours without issue.