When you start to encounter random crashes and your computer fans seems to be extra loud this can be a sign that you need to do a little dusting inside your computer. This is not as hard as you would think; you just need a little compressed air (canned air) and maybe some cotton buds (some use art brushes to do this too) if the dust is harder to get rid of.
The main problem with fans inside the computer, especially in dusty areas is that the fans tend to get clogged up. If they can’t work to their full capacity then they can’t manage the cooling down of your CPU adequately meaning the processor will overheat and will either crash your system or automatically shut down for the safety of the processor itself.
Cleaning out the Fan
The first step of course is to open up the case of the computer. This is easy to do, either by having to unscrew the side of the case itself or on some cases not even having to use screws at all. Once the case is open then take a look at the fan and see if there is an accumulation of dust around there.
If the fan is dusty then use the compressed air and blow the dust out of both the fan and the heat sink itself. The heat sink is the metallic cube looking mechanism that is placed over the chip. This displaces the heat from the chip itself and controls the temperature. If the fan now looks clean of dust this should be enough. It may also be an idea to blow some air through the power supply and the graphic cards fan to get rid of any accumulation of dust around there also. The less dust inside the case the better your computer will run.
If the processor fan looks like it is still gunked up with dust, as can happen sometimes use the cotton buds to just try to get rid of it the best you can. The aim is to make sure that the fan has nothing that can hinder its movement and that the heatsink is clear of dust. It’s important that both the heatsink and the fan work to their optimum performance so that your computer can work the best it can.