I have random computer shutdowns, i have tested the power supply, ram(i have 2 sticks and i switch them out), and video card. I think its my hard drive but what makes me wonder is that i started up a ubuntu live cd to back up my stuff just in case it is my HDD and it still did it. It copied a lot more files then windows did but still did it. Oh yea, my cpu was running hot so i reapplied the thermal and now its running in the normal range.