When your laptop gets dirty and dusty inside, the dust that collects forms a “blanket” over the exhaust grills, stopping the fan from pulling in cold air and pushing out the hot air coming from the processor. This is the result – see pictures below for before / after shots. Dirty dusty overheating laptop.
Before: Customer came complaining the fan of his Sony Vaio is making lot of noise. Process: We opened the laptop and found very fine carpet of dust. It looks very innocent, but it causes overheating and loud noise from the fan. And also it causes the coolant on the processor and graphic chip to harden and even more overheating. After: We cleaned the fan and disposed hardened coolant from the chips and heatsink, applied new coolant, assembled all back again, tested and voila. All nice and quiet, running perfectly again.
Before – dusty and hot and noisy… Process = disassembly, cleaning the dust off, removing old cooling paste, applying new cooling paste, assembling back together After – nice and clean and cool and quiet ;)