Windows 10 Volume Problem (Volume Randomly Changes)

I am having the same issue, plus horrendous white noise that I did not have in either Windows 7 or 8.1. As with the above poster the main volume slider itself doesn't jump just the actual audio levels themselves. 

My sound is on-board Realtek HD Audio. I have tried everything possible to fix this i.e. rolling back drivers, making sure any effects were turned off in Playback Devices, turning off Exclusive Mode, setting the Communications tab to Do Nothing.

Absolutely nothing helps so this is obviously a driver/OS issue. I could deal with the static, but the volume jumping to maximum levels every time audio is used is driving me insane. 

If this isn't fixed soon soon in an update - I will probably downgrade as well. 

For anyone facing this issue with Realtek drivers I have found that version 6.0.1.7016 of the drivers (Got mine from Dell's website) stops the volume raising issue. I do not have a Dell XPS and this works perfectly for me.

This is how I went about installing the drivers to stop Windows from updating them:

1. Download 7-Zip from here and install it. (I use the 9.38 Beta which works fine under Windows 10.)
2. Download drivers from Dell here make sure to Choose the first download ending in A00.exe. Do not Install them yet!
3. Right click on the downloaded driver package 7-Zip-Extract to-> "XPS_8700..."
   
4.  Download the wushowhide utility from Microsoft here.
5. Go to Device Manager. You can find it simply by typing "Device Manager" into the Ask me anything search bar. Under Sound, video and game controllers right click on Realtek and choose Uninstall from the Menu. Check the checkbox for "Delete the driver software for this device" and click Ok.
   
6. Restart your machine.
7. Run the wushowhide utility click Next then click on -> Hide Updates Check the checkbox for Realtek Semiconductor Corp... and click Next and run through the rest of the utility. Completing this step is crucial or Windows Update will continue to install updated drivers that break your sound. 
8. Go back to Device Manager and once again under Sound, video and game controllers right click on Realtek and choose Uninstall from the Menu. Check the checkbox for "Delete the driver software for this device" and click Ok.
9. Do not restart this time when it asks you to.
10. Go to the XPS_8700 folder where you extracted the drivers go to the RealtekHDAudio folder and inside of it run Setup. 

The Setup application will install the old drivers and restart your machine. This worked for me on my desktop machine, but I cannot guarantee it will work for everyone with Realtek on-board sound. However it is worth a shot if you have Realtek on-board sound, enjoy Windows 10, but cannot handle getting your eardrums rattled every time a new audio stream plays.

While I can do what crdev1 suggests, and I do have the Realtek on a Dell XPS, I'd prefer to have Microsoft fix it rather than implementing a workaround - that I will later have to un-workaround.

Symptoms: Online videos play at high volume even when my volume slider is on 2. Once I open the volume slider and click on it, the volume reduces to the correct volume. This was NOT a problem in Win8.

For anyone facing this issue with Realtek drivers I have found that version 6.0.1.7016 of the drivers (Got mine from Dell's website) stops the volume raising issue. I do not have a Dell XPS and this works perfectly for me.

This is how I went about installing the drivers to stop Windows from updating them:

1. Download 7-Zip from here and install it. (I use the 9.38 Beta which works fine under Windows 10.)
2. Download drivers from Dell here make sure to Choose the first download ending in A00.exe. Do not Install them yet!
3. Right click on the downloaded driver package 7-Zip-Extract to-> "XPS_8700..."
   
4.  Download the wushowhide utility from Microsoft here.
5. Go to Device Manager. You can find it simply by typing "Device Manager" into the Ask me anything search bar. Under Sound, video and game controllers right click on Realtek and choose Uninstall from the Menu. Check the checkbox for "Delete the driver software for this device" and click Ok.
   
6. Restart your machine.
7. Run the wushowhide utility click Next then click on -> Hide Updates Check the checkbox for Realtek Semiconductor Corp... and click Next and run through the rest of the utility. Completing this step is crucial or Windows Update will continue to install updated drivers that break your sound. 
8. Go back to Device Manager and once again under Sound, video and game controllers right click on Realtek and choose Uninstall from the Menu. Check the checkbox for "Delete the driver software for this device" and click Ok.
9. Do not restart this time when it asks you to.
10. Go to the XPS_8700 folder where you extracted the drivers go to the RealtekHDAudio folder and inside of it run Setup. 

The Setup application will install the old drivers and restart your machine. This worked for me on my desktop machine, but I cannot guarantee it will work for everyone with Realtek on-board sound. However it is worth a shot if you have Realtek on-board sound, enjoy Windows 10, but cannot handle getting your eardrums rattled every time a new audio stream plays.

Actually, I am tired of this, so I think I'll give it a shot, and if it works, it'll be marked as the answer.

I found an even more simple solution here.

The advice in this thread fixed my issue immediately. Quoted here in case you find this thread on Google (below is from superuser link):