How to Properly Clean Your Computer Case in 5 Easy Steps

Remove all cables from your computer.
Take your computer outside, unscrew and remove the side panel from the case.
Stabilize any fans in the case with your screw driver (processor, video card and power supply)
Spray compressed air on the interior of your case, working from top to bottom (no more than 80psi)
Using your microfiber cloth, wipe the exterior of the case down with invisible glass, replace the side panel and plug your computer back in.