Sometimes, a high definition audio controller not working Windows 10 issue can occur if your cable connection is loose.
Solution 3- Check Cable Connection And Volume If the audio issue is still unfixed then choose to Cancel here, and then repeat step 2 and step 3 with all of your other default devices.
If there’s a yellow exclamation mark along with the device name then it is confirmed that there is a problem with the driver, and you need to update it.Here you’ll see Realtek High Definition Audio.In the Device Manager window, click on the Sound to expand it -> video and game controllers.This will open the Windows 10, Device Manager. Open the Run dialogue box by pressing the Windows + R key simultaneously.In order to verify that your Realtek high definition audio not working Windows 10, follow the below-given steps carefully:
Solution 1- Verify Problem is Related to the System Driver