How to clean the dust out of your desktop computer

Living in the desert, we're no strangers to dust. It's a persistent issue that can clog up air vents, heat sinks, and cooling fans inside your computer. Moreover, dust is a conductor of electricity, making it a potential hazard. To stay ahead of these issues, it's crucial to clean the inside and outside of your computer at least every three (3) months, and even more frequently if you live in particularly dusty areas like Phoenix. I personally do it monthly, given that my primary system is in an open case (Antec Skeleton).

Let's start by turning off the computer and unplugging the power supply. Now, with the system de-energized, we can begin cleaning it. Since this can be messy, I recommend that you do this outdoors. This does mean disconnecting all attached devices/peripherals, but you won't be blowing the dust back into the surrounding area.

*** Note: When using compressed air, it's important to exercise caution. Always use a non-metallic utensil, like a wooden skewer, to hold any fan in place as you clean it. This prevents the fan motor from being damaged by spinning it too fast. As you clean your computer, be sure to check for cooling fans that spin freely with your finger. If you find a fan that is hard to spin, it may have failed and needs to be replaced. ***

First, let's open the case. If the front panel of your case can be safely removed, go ahead and remove it too. Using a can of compressed air or air compressor and a non-metallic utensil, let's start inside and work our way out.

Typical case with front and side panels removed

Clean the CPU fan and heat sink fins

Clean the vents and cooling fan on the power supply

If your system has a graphics card, clean the fan and heat sink

Clean all heat sinks and open slots

Clean all case fans

Clean all openings in the case and connection points

Once the dust has settled, reassemble the case, re-attach all devices, and you are all done.