Then click on Let me pick from a list of available drivers on my computer in the pop-up window. If the NVIDIA audio not working problem still occurs, you can click on Update Driver and select Browse my computer for driver software. Go to the Driver tab, and then click on Roll Back Driver and follow the on-screen prompts to complete the operation. Step 2. Expand the Sound, video and game controllers category, and then right-click Realtek HD Audio driver and select Properties. Step 1. Right-click the Start button and select Device Manager from the context menu. To fix it, you can try rolling back, or updating, or reinstalling the audio driver. The NVIDIA High Definition audio not working Windows 10 issue can be caused by corrupt or outdated audio device drivers. Roll Back or Update or Reinstall the Audio Driver Now, you can check if the NVIDIA HDMI audio not working issue gets resolved. Right-click the Digital Audio/Monitor/HDMI Output device and select Disable from the appeared menu. Step 2. Stay in the Playback tab, and then right-click the desired audio device and select Set as Default Device. Tip: Also, you can open Control Panel, and then change View by type to Large icons and select Sounds to access the same window.