Q Why is my computer making a buzzing, humming noise?
A
It’s very possible that one of your fans is clogged up and needs replacing or that it is just an accumulation of dust on components inside.
If it’s a PC, it’s not usually a problem as these fans are easier to replace, but if it’s a laptop/notebook, specific components may need to be ordered if they can’t be fixed by the usual dust blow-out and cleaning.