Customer brought a laptop telling that it shuts down by itself and fan being loud. Customer thought of buying a new laptop, but we convinced him that we can fix the problem. During the diagnostics, our technician figured out that thermal paste replacement need to be done, and cooling system needs to be cleaned from dust. You can follow these pictures to understand how to change thermal paste and clean your laptop’s cooling system.
On the left picture, you can clearly see that there is dust buildup between the fan blades, which on the right picture, is our technician’s work: clean from the dust fan.
On the left picture, is the heatsink that carries the heat away from CPU. This is the side where the fan blows the hot air out.
On the left picture, it is dry thermal paste that supposed to help to efficiently move the heat from CPU to heatsink. Thermal paste usually dries up every 2-3 years, but low-quality ones are to be replaced more often. Before applying new thermal paste, CPU needs to be cleaned (see the middle image). Then, a thin layer of quality thermal paste needs to be applied.
Then, after the thermal paste replacement, the computer is to be assembled and tested. It should be quieter, and the CPU temperature should be lower.
Sometimes, buying a new item is a solution, but in most of the situations, you can take it to repair shops to save your hard-earned money.