Hi all, just this monday I purchased my only second Macbook ever. My first was a 2009 MBP, which has done a marvelous job all along. However, I decided it was time to move on and three days ago I bought a Macbook Air primo 2015. After using it two days, I was really excited (after my first mac I have really high expectations). Today, however, from the second I logged on it has _continously_ been making a whirring almost clicking noise, which I assume could be the fan (the sound is located somewhere under Q and W on the keyboard. It sounds somewhat like when I was a kid and we used to attached a card with a clothespin to the wheel of our bikes. Like this: ). I've just been running Pages and browsing standard websites. The computer is not even remotely warm. The sound irritates me immensely as I expected the computer to be completely silent as my former was in the first couple of years (and I work in very quiet surroundings). I know the fan is supposed to go on when the computer gets warm, but my old computer never made this noise. I'm running Yosemite. Would an upgrade to Capitan work? Or is it simply normal (in which case I would be very disappointed with the standard of the product)? Or is there simply something wrong with my computer? I'd be very happy to hear if anyone has experienced something similar or knows more about this than I do.