My fan is buzzing.
Most likely, something is clogged, but before I open it up I'm asking for input. So the fan will buzz noisily at high speeds and if I put my ear up to it at normal speed I can hear the buzz. might not be dust because to my knowledge, dusty fans don't buzz. this started a week or two ago. Haven't opened it (yet)
either way, If I open it I'm making a guide.