Yesterday, out of the blue, my G4 started making a very loud humming noise. I had several programs open, nothing froze but I was unable to shut down from the Apple menu so I rebooted from the harddrive. The sound was gone and I have not heard it since. However, when I start up my computer now, it no longer makes the little Apple start up sound. Anybody know what happened?
I know some G4s have noise problems. Mine sometimes makes an irritating sound but never for very long. This was different...almost deafening!