For the average PC, most of its noise comes from its fans. Computers are typically built with cooling fans that are meant to operate at acceptable noise levels. Although, as machines age, they tend to require more work out of the installed fans in order to keep the components cool, which may explain why your old machine is much louder today than when you first got it.
QuestingHound Technology Partners Blog
Guess what? Today is National Clean Out Your Computer Day, and we know the perfect way to celebrate! Go grab yourself a can of compressed air and your trusted IT technician, because it would be a shame if you were to miss out on this annual opportunity to improve your computer’s performance.