Surface Laptop 3 Faint Buzzing Sound

To summarise, possible workarounds discussed in the 35 pages above include:

 - editing the registry to disable CPU idle states

 - editing the registry to disable the touch screen

 - install and configure Throttle Stop

 - install Winstep Nexus (a MacOS-style dock for Windows)

 - install the RingCentral Classic app.

My impression is that people fall into two groups: those who don't find any of the above acceptable, and those who are willing to adopt some such step because they'd like to keep the laptop (or have no choice but to keep it) and want to get rid of the static sound. 

For people with the latter perspective, it would be extremely useful to have an expert assessment of the pros and cons associated with each of the options above.  What has the least impact on performance and battery usage?  

I've taken the RingCentral route because it's easy to understand: it's just a background process that seems to make low demands on CPU and memory.  I'm reluctant to start editing the registry because I don't understand the implications of the commands described, but I'm open to persuasion if it makes sense to disable CPU idle states in that way.

Hello! I believe I have a solution! I have the surface laptop 3 and it's about a month or so old. The buzzing started a few weeks ago and I browsed through this forum searching for a solution and couldn't find one. However, about 15 minutes ago, I told my friend about it and he helped me run a CPU test. We found that the buzzing only happens when the CPU ISNT working hard. He told me to download https://www.winstep.net/nexus.asp . And the buzzing stopped immediately! I guess what it does is put enough load on the CPU to stop the buzzing. Its just like an extra task bar (note that when I downloaded it I had to turn off a setting that made a voice announce the time out loud). There might be other things you can download that will do the same thing, but this is just the first thing that worked.

Hello,

I’ve got the i5 8GB Surface Laptop 3 (13.5-inch), and today, while browsing the internet, I noticed a fairly faint  buzzing sound coming from under the keyboard. It was faint enough you couldn’t hear it from a couple metres away, and sometimes buzzed continuously, other times buzzed in short repetitive bursts.

It didn’t sound like the fan to me, so I opened up the task manager to see if browsing was straining the computer in some way.

I have updated the computer completely, but the buzzing persisted.

Is this a normal electronics problem? Is it actually just the fan? Or is it possibly a defective unit?

Edit/Update:

I took the device into the MS Store today to see if there was something wrong. The staff took it into the back and tested it. They found increasing the computer's workload caused the sound to increase and described it as a popping static-y sound. They replaced the device and I have a new one now. Unfortunately, I've found through usage that this one is also making the sound. I am waiting to see if a firmware update reduces the noise since it seems pervasive across the devices.

the issue is fixed when you put the laptop at best performance and hold the power button firmly for 4 to 6 seconds until the buzzing stops, then the problem is resolved, but i have another problem,  when the laptop is at recomended performance, you will hear the buzzing sound again, i dont know why, can someone help me with this issue

Also, the oscillation you're talking about isn't the same issue as the rest of this thread really, which is more likely coil whine or some other electrical problem.

I've noticed this, but your particular observation can be fixed by not using the Netflix app. It's something with the sounds files that makes the speakers buzz, so I just use the browser.