Surface Pro 4, annoying noise from the back!

Can someone explain why the back of my surface pro 4 (only when the brightness isn't 0% or 100%) makes a noise?

For example, when it is on 25% of brightness it starts making a strange noise slight like a whistling...

Can someone help me?

Can we confirm what model Surface Pro 4 everyone is having this high-pitched noise with?  I would like to figure out whether the high-pitched noise has anything to do with model.  I have the Core i5 4GB/128GB version

**I tried this registry change, but it did not remove the problem.**

Also, my separate thread regarding a high-pitched noise has been folded into this thread.  Does anyone have any further ideas about what could be causing this high-pitched sound?

For some reason I didn't think of looking at the other units, maybe because I just assumed I had a bad one (or more likely because I had time constraints at the time and just goofed).  Anyhow, I am definitely going to look at other units to see if it is just me or not.  I'm hoping that some more people will mention whether they are having this issue too, just so I can mention it to the tech I speak with in a couple days.  I definitely appreciate that you've jumped in here!  :-D

Hi,

From what you have described it sounds like I have the exact same issue.  I also have a SP3 and have never hear this sound from that device. I don't think it is just your ears, at times the noise is very noticeable.

The only thing I seem to have noticed is that the noise gets louder on web pages that have either video or animated ads.  Unless that was just my imagination.

When you were in the store previously did you happen to check out the SP4 demo units there to see if they make the noise too?

Hi there!  Yeah, I am very curious also whether this issue is fixable with a firmware release.  I am going to a Microsoft Store again this Thursday to see what can be done.  I really hope it is fixable, because I would hate to have to have another replacement.  Part of the problem is trying to figure out whether my ears are just more sensitive, or whether this is actually a problem with the devices.  The only thing that makes me think this is a device issue is that I didn't have this problem with my SP3, but now I'm having it with the SP4.

Is your device having the same exact problem as I described in my previous post?  Is there anything else you have figured out that makes the problem better/worse?