Clean your PC and replace your thermal paste at least once a year. Computer fan goes from HRRRRRRRRRRRR…..down to shhhhhhhhhh.

You can use an old toothbrush to clean off the dust, filth and hairs off the mainboard. And contrary to popular belief adding a little bit too much paste doesn’t actually make things worse (this is a last gen i7 Intel NUC board).

Clean or replace the fan and use spray air inside the radiator-thing (it clogs after a year of use, even if you don’t have 2 cats).