Hi. recently upgraded computor. sounded very noisy.
loud hum, that would get quieter and then louder.
put a new hard drive in[ thought that might be cause. was putting new one ia anyways.] finally had new power supply installed. still get a hum that kinda quiets down and then gets louder, sounds like its really working.its not a consistent hum it , its like eh, eh, eh. I know this sounds silly, its hard to describe a sound. is it common for the computor to make this sound and also, could it posibly be coming from the hard drive. thanks