Blow out all case filters, fans, heatsinks and other components with a can of compressed air.
Add case filters to air intake vents. Purchase them or fabricate them out of any fine mesh--nylon stocking, ScotchBrite pad, piece of household air filter, etc.
I am having problems with dust in my computer. I have my computer on for several hours a day, and I think that it is overheating, and when I took the case of my PC, I discovered that there was a lot of dust inside, especially on the fans. Does anybody know what I can do about the dust, or if there are any solutions? If you do, please let me know. Thanks.