No sound device detected

I suppose it's not a driver problem.
At the top of the list, there must be an "Audio inputs and outputs", and there must be devices when you unfold it.
Please go to 'Settings' >'Devices' > 'Bluetooth & other devices' > 'Sound settings' > 'Choose your output device', and choose the TV as the output device.
Let me know if it resolves the problem.
 
I have same problem. Can anyone post your working audio device name.
System tray shows "No Audio Output Device is installed".
 
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