Currently Being ModeratedJun 18, 2013 3:33 PM (in response to OGELTHORPE)
I went to Apple a while a go about a mild fan noise, a hardware test was performed and showed nothing wrong. I did one myself, and it showed nothing either, yet it's still making this noise.
Currently Being ModeratedJun 18, 2013 3:39 PM (in response to -Matt)
The only other suspect would be the HDD but with a noise such as that, I would believe that the MBP would not function. Put your ear on the MBP and see if you can determine where the noise is emanating from.