My new imac makes a buzzing sound all the time. I think it maybe the the cpu thing as when i open photobooth the noise completely stops.
Is there anyway to fix this or am i going to have to mess about with a replacement. ?
which model is yours?
Numerous threads on this already. I suggest you post there.
Clearly didn't make much effort.
https://forums.macrumors.com/threads/1509610/
https://forums.macrumors.com/threads/1510818/
https://forums.macrumors.com/threads/1510087/
^ Solution potentially in that last link.