I cleaned it out about .... hmmm .... never why?
First time posting here. You are certainly not kidding about this one. I have had this exact problem in the past with a fan going out. Didn't know what the problem was when the pc started shutting down and sometimes wouldn't even restart right away. After a month or so of this problem one day the computer started smoking in the back and I had to replace just about everything..2 hard drives..cd and dvd rom and a couple other pieces. With labor cost me over $400. I am currently having a similar problem. Smells like smoke or something and my pc shut down last night in middle of night. Did it again today so I'm gonna check the fans out. Great advise here.