Hi guys, My gf has a problem with her Macbook Air 2012. It has happened to times that when she would power the laptop on, some repetitive clicking noises would come from the bottom of her macbook. These would occur every few seconds. Then when you tap the bottom of the Macbook (with only a little bit of force) suddenly the fan will spin up really fast for a second and after that it's silent again. So presumably the fan gets stuck, but it has happened two times already, which is a bit worrying. Is this likely to happen again and/or that this will cause damage to the laptop? Thanks in advance!