Q&A for How to Clean the Inside of a Computer

Compressed air cans work! If it's not getting clean with just air, though, do an isopropyl alcohol bath. That will clean a lot of it without disturbing any of the components.

This depends a lot on how you use your PC and where it is located, but you should consider cleaning it every 1-3 months. If your PC is in an environment with a lot of dust or pet hair, you should clean it more often. If its environment is cleaner, you can let it go a little longer.

Simply wipe external areas with a washcloth sprayed with an all-purpose cleaner that's safe on plastic.

Never use your vacuum cleaner to clean your computer. The fan could start spinning, which would produce power instead of consume it. Sometimes, the currents that are produced by vacuum cleaners and fans are so high that they can destroy your computer.

You can use an air compressor, or use a hair dryer with the heat off.