Now I do clean mine myself, about every 3 months give or take.
I just use Air, from my Automotive Air Compressor, which has an Adjustable Regulator to regulate the Air pressure coming out the end of the Nozzle.
I lower it to about 20lbs psi.
and carefully with the sides off my computer start blowing all around the cooling fans, which I have 4 fans, 1 on my Video Graphics card and 3 more in the case itself.
Also pay special attention and clean all the dust & dirt away from the Heat Sink, by the processor and the fan too, and all the vents on the outside of the computer case too !
Keeping proper Cooling Ventilation will keep your Processor from over heating and keep your Video Graphics card from getting too Hott and not working properly !
its Amazing the amount of Dust & Dirt these computers can collect even in a short period of time.
Regular scheduled cleaning maintence will keep you free of most overheating problems and slowness, as things get warm, they have a tendency to slow down or in some cases Shut Down !!
So keep your computers Super Clean, it only takes about 15 to 20 minutes !!
save your self some headaches and money in the long run !
Below are photos of how dirty my Flight Sim computer had become, tho I neglected it for about 5 months, I usually clean it every 3 months regularly.
and I could NOT get this 1 Aircraft to install onto my Hard Drive, any suggestions
? 
Jetranger.
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