It's not a project for the faint of heart, but it's possible to pull the laptop completely apart to the point of removing the motherboard from the laptop body and blowing the dust out/off of everything. Check the support section of your laptop manufacturer's website for a "hardware maintenance...
400.
(For those wondering, I will concede to being a lamer and waiting for someone else to fill in 395 just so I could get 400. Someone else can get 500, though, seeing as I seem to have gotten 100, 200, 300, and 400, all today...)
--- Mr. DOS