Hi! Let me help you with this issue.
I understand you have tried the steps that you can find online to get this fixed.
May I know if this is for a laptop or a desktop PC?
Have you tried a hard reset?
Turn off the laptop.
Unplug the charger.
Remove all USB devices.
If the battery is removable → remove the battery.
Press and hold the Power button for 30–60 seconds.
Reinsert the battery (if removed).
Plug in the charger.
Turn the laptop on.
And then test the audio.