Clicking noise rMBP 13" Early 2015
My brand new Macbook Pro w/ Retina Display is making weird metallic clicking noise every once in a while even when placed on a flat surface. Even if I disconnect everything, including the charging cable and the mouse and watch a video with the sound turned off or browse internet, it still makes this sound, (like metal touching metal kind of sound) around 5-6 times a day. Usually it's faint, but it still is very annoying.
There's no HDD that could cause it. Although it sounds quite similar.
If you are using a similar notebook, please report if you can hear any sounds (not just these) in similar setup, say, in 1 hour, while browsing with a mouse and not even touching it.
MacBook Pro with Retina display, OS X El Capitan (10.11.2), null