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I'm running Windows 10 on a PC with an Intel i5-8400 & an ASUS Z370 mobo. The sound quality was rather flat, so I proceeded to tweak it with the equalizer setting, whereupon I noticed that the Realtek HD audio drivers were actually missing. I installed these but afterwards, the associated icons did not appear anywhere on the taskbar. I couldn't open RtkNGUI64.exe manually either. So I tried to follow the suggested steps on fixing this issue, but when I opened the device manager, I couldn't find Microsoft UAA Bus Driver for High Definition Audio under system devices or anywhere else.It doesn't seem to be available at Asus, so where do I download this?microsoft uaa bus driver for high definition audio is missing from device manager.