Strange noise when start up Macbook pro Retina
Hey, guys I have a question about sound that comes from my macbook pro retina late 2013. I bought macbook in April 2014. At start i didn't hear no sound, but now i can hear it every time when I power on device. Does anybody know what is that sound? Is that normal sound?
https://www.youtube.com/watch?v=RlqqgoFNhJE
Cheers!!!
MacBook Pro (Retina, 13-inch, Late 2013), OS X Mavericks (10.9.5)