My laptop have been somewhat dodgy the past 6 months. On occasions, it has overheated and died. The dying is caused by the CPU protecting itself from meltdown. In the old days there would be a burnt smell, and then you would swear. Even though I’m grateful the laptop doesn’t get bricked when overheated, I don’t really appreciate it dying on me. Sometimes it could die in a hot room, if it the CPU utilization was high enough. Not very handy.

Another problem have been the noise level it have produced, even by just browsing the web. It was making louder noise than my desktop PC, which got something like 8 fans in it. My laptop have 1. I had opened it earlier too look for dust, however it seemed perfectly clean. Yesterday, I figured I should try replacing the thermal paste. So I went ahead and opened it up again.

I stared dismantling the fan, with the easiest parts first: a piece of tape. Under the tape, I found this:

A thick layer of dust I had not noticed and blown out the first time I cleaned it. After removing the dust, I simply replaced the tape, closed the laptop and booted it up. No more loud noise, even under heavy load! The reason for the noise, was this compact layer of dust. The fan forced air trough the dust, resulting in a high pitched noise, and the fan working harder than it should. Now the air is flowing freely, and the bad sounds are gone. Happy times!

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