No Sound In Bootcamp Windows 10

Would you be willing to re-install Windows? If yes, remove Windows via BCA, disconnect all external peripherals (except Keyboard/Mouse), run SMC and NVRAM Reset and re-install Windows and test.

You can connect all your external peripherals once Windows is fully installed.

You are missing the Cirrus audio devices. Did you install BC drivers?

SonicMase712 wrote:

No

In Windows Services, can you check if there are any Apple Services which are stopped or set to manual start.

The AMD HDA driver is missing. Do you have the GPU correctly identified under Device Manager -> Display Adapter?

Click on Start and select Command Prompt (Admin\run as administrator).

Execute

net localgroup Administrators /add networkservice

net localgroup Administrators /add localservice

Reboot. Go back to Device Manager and post the same screen you posted earlier.

Since this is a new installation, I suggest you remove the current W10 installation using BCA (only). Run SMC and NVRAM reset, and re-install Windows and post the same screen shot from the Device Manager.

I purchased this $6.99 USB external audio adapter from the thread you suggested @Loner T. (Sabrent USB External Stereo Sound Adapter for Windows and Mac. Plug and play No drivers Needed. (AU-MMSA) https://www.amazon.com/dp/B00IRVQ0F8/ref=cm_sw_r_cp_api_.QzrBb8FAWPKM)

Four days in and I have had working sound and great sound quality in Windows 10. My biggest regret is that I didn’t find this sooner after putting hours into troubleshooting. Like another poster said, I suspect some iMac Pro firmware has been updated but the associated drivers have not. It’s annoying that an external device is needed to fix the issue, but I hope this adapter works for the others posting in this thread as well.

Can you right-click in Apple Audio device, and post the PID/VID of the device?

If you connect your headphones, do you get any audio?

Can you reset SMC and test?

Can you confirm the year/model of your Mac (do not post the serial number)?

Im Windows Device Manager, can you expand the Audio entries and show the available devices?

It is supposed to have the two entries shown below.

In Device Manager, under View, do you have a check box for Show Hidden Devices?

As a test, connect a USB Flash drive, format it as MBR/FAT, run BC Assistant -> Action -> Download and check if the software will download correctly.

I'm also having this same issue, and it all started after installing the second update to the macOS Mojave beta. I know that sounds crazy, but sound in Windows 10 worked just fine on High Sierra, and even the initial install of Mojave. Specifically, the second update for Mojave is what was done right before sound stopped working in Windows 10.

I've gone through a whole gamut of troubleshooting steps, including a full factory reinstall of both macOS High Sierra 10.13.6 (through Internet Recovery mode) and a fresh install of Windows 10 through the Bootcamp Utility. Interestingly enough - I'm not sure at what point - but Bootcamp Utility has also decided to stop working. I think it happened after the 10.13.6 update, as I recall it working fine on 10.13.5, but now Bootcamp will always throw an error about saving the support software.

I'm able to work around the Bootcamp issue by partitioning myself and installing Windows 10 via USB (note: it will fail to detect the SSD drive, you must load the AppleSSD driver included with the Windows Support software) but there's still no sound in Windows 10. As far as I can tell, everything else works, just no sound.

My current theory is that Mojave must have updated the firmware of something somewhere. Perhaps the T2 chip? From I understand, it also handle audio processing among other things. A firmware update would explain why the issue persists even after removing the macOS Mojave beta.

I think this is going to be something that'll have to be fixed in a future macOS update. I don't know how exactly macOS affects Windows, but clearly there is some sort of relationship present.