I understand how frustrating it is to lose sounds from your Surface, especially when the device is still quite new and the issue appeared immediately after a Windows update. Given what you’ve already tried, I admit there aren’t many things I can suggest here, but it’s worth trying out if you haven’t yet:
1 - Use the Surface built-in tools
- Please refer to: Fix common problems using the Surface app and Surface Diagnostic Toolkit | Microsoft Support
- Run the Surface Diagnostic Toolkit > Follow the on-screen instructions.
- Open the Surface app > Help & support > check the update status.
- Select Get help and describe the problem you are experiencing.
2 - Force your Surface to restart
- Select Start > Power > Shut down > let your Surface fully shut down.
- Wait for 10 seconds > press and hold the power button for 20 seconds.
- If you see the logo appear during that, continue to hold for the full 20 seconds.
3 - Manually install the specific Surface drivers and firmwares
- Visit: Download drivers and firmware for Surface Go | Microsoft Support
- Select your model (Surface Go 3) > go to the official website.
- Choose your language > click Download the package.
- Fully shut down the Surface > disconnect all external devices:
- USB devices, hubs, headphones, mouse…
- Leave only its charger, plugged to the wall outlet.
- Restart your Surface and install the downloaded firmware package.
4 - Reinstallation repair (keeping files and apps)
- Use built-in repair option
- Open Settings > System > Recovery > Fix problems using Windows Update
- Click Reinstall now > follow the onscreen instructions to reinstall Windows.
- Perform an in-place upgrade:
- Follow the instructions here: Reinstall Windows with the installation media - Microsoft Support
- You need to use the specific Surface Recovery Image Download - Microsoft Support
Disclaimer: Both Windows reinstallation and in-place upgrade will refresh your Windows files and operating system without removing files or applications. That being said, we always recommend that if you have important data, you should back it up first before making large system changes.
If the issue persists even after a repair install, you may consider a warranty repair, especially if the device is new.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.