I have always assumed that this is just a result of use(many hours on lap, bedtop comforter) and that the components have simply lost structural and operational integrity because of overuse/heat.
Intelligent admittance of being unintelligible lol.
You probably shouldn't put in on a comforter like that but I think you get that part. Speedfan even when done right isn't gonna help you on a laptop. We don't really know if anything is broken so there isn't a fix.. . yet.
Try opening up the case first and cleaning that baby out really good.