SLPT If your computer is dirty and blowing air on the parts isn't completely cleaning them, just hose it down out back! Make sure to plug it into power during this!

Pressure washer with the smallest nozzle really gets those nooks and crannies.

Then use the leaf blower to dry it off!

Another tip that has worked for me: if you connect the CPU pins together, the electricity can flow faster and so your PC runs better!