Set to HD and onboard audio is enabled in BIOS.

This one is the nvidia hd audio. Is it possible the onboard audio is wrong? Because even if there is no drivers isntalled i think i should see it in the device manager.

Yeah sorry, i didn't check it. :) Btw my op system is win 10 1809 rs 5 and as i read today it is not the most recommended version. :/ The 'high definition audio' is for my monitor.

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I installed it but i still couldn't see realtek audio in device manager. 207342

Onboard Audio is on in BIOS. Asrock X399 Taichi