Macbook Pro weird noise in the upper left corner.

Hi....
I have a mid - 2012 MacBook Pro. Whwn the Turbo Boost kicks in, and the laptops gets hot, the MacBook starts doing a noise that sounds like... clicking?
It definitely sounds mechanical, and it also sounds a bit like something is loose as the sound becomes a bit weaker when I push the cover of the MacBook.
I have a suspicion that it is something to do with the left fan.
When I close the laptop and let it go to sleep and then open it again, the sound is gone. Unfortunately, only to come back every now and then.
What could this be?
If it really is the fan, is there a way to fix this without getting a new one or taking it to a Genius Bar?
Thanks.

If it really is the fan, is there a way to fix this without getting a new one or taking it to a Genius Bar?
Nope. Only an Apple tech can diagnose and fix the problem. You could try cleaning the fans yourself, or even replacing the fan yourself, but I don't recommend doing so.
Clinton

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