I had same problem.|
It could solve by uninstall and reinstall sound driver.
BUT this problem happened many times.
So this way is not a fundamental solution.
I think this problem happened after the aniversary update.
and some driver , for exmample Audio-end-point driver, was updated.
Maybe some updated driver disturb the Sound driver, ES8316Audio codec, intel SST audio etc.
But I can't find the new ES8316Audio codec driver.
And the new intel SST driver is not matched for Hi12, it's matched other tablet using Realtek Codec.
I've tried several way, but I could not saolve it.