Hello, I have MacBook Pro OS X 10.8.2 since 2010. And today this noise started to bother me. http://www.youtube.com/watch?v=CHwDEkfDYlI
Does any one knows exactly what is it? And how can I fix it?
Take off the bottom cover and inspect it carefully. You might run an Apple Hardware test (you may need to use OPTION D to start it):
An appointment at an Apple genius bar is probably the best option. What you have is not normal.
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