I received a brand new mid-2012 MBP over a week ago and straight out of the box there was a periodic clicking noise from the HDD (noticeable when the HDD was "idling"). I called up Apple Care and they suggested take it to an Apple Store to get the drive replaced. So I did, and got the machine back home again to find the exact same periodic clicking noise!
I also noticed that once the "click" happens, the drive seems to "spin down" slightly and then up again (noticed by putting my ear to the casing).
So, I call up Apple Care again and they ship be a whole new MPB and the other gets returned.
Now, imagine my surprise (or rather, disappointment) when the new one arrives this morning and again, straight out of the box, there is that periodic clicking noise. Also, this time the spinning up and down noises seem to be more audible than before.
What are the chances of this happening twice in a row with two brand new machines?! I hate to think there may be a design fault. Maybe there's a power supply issue and the HDD is not getting enough juice? A friend even suggested that maybe, because I special ordered with the high-res glossy display, that it could be because of that?!
Am running out of ideas and patience!
Going to call Apple Care again in the morning and have a good moan at them.
./p