I was repairing somone's computer today, nothing especially different about the job from others... I run a I wanted to make sure the RAM wasn't bad so I boot up memtest86++ and and it repeatedly hangs at Test #3 - And the fans start blaring like crazy... I open the box, and this is what I found in the heatsink.

 

 

 

I doubt this computer was more than 4 year old judging by the model and make of the parts in it.

 

Oh, and that's cigarette smoke and nicotine, not dust or dirt :/