Windows 7: Random Shut downs

Well i'm back again and this time i really have a problem.

I went to blow the computer out today and it tipped over, it didn't fall far and so i picked it up, finished cleaning and plugged everything back in.

After about 30 minutes the computer just cut off. No warning or anything. So i turned it back on again and this time it didn't even boot to the Win screen, it just shut down again.

I did some searching, found someone did the same thing as i did and their problem was the CPU kinda popped out a bit. So i reseated mine and the issue still remains.

I am in Safemode right now seeing if the computer will shut down. I really have no clue as to what's causing this.

Any help would be greatly appreciated.

PS: I'm not sure if my CPU is overheating or not (have no clue what the correct temp is supposed to be) but my AC went out and it's pretty damn hot in here....maybe that's one reason?

EDIT: I'm pretty sure the reason for these "random shutdowns" is due to the fact my room is so hot. My CPU was running 190F so i'm pretty sure it automatically shut itself off.