Update-- I rolled back the Realtek driver to ver. 8666 since that is the latest one on the ASUS support page for the Z390-E. The issue of the Nahimic service, however continues.
I am having an issue with the Realtek HDA driver on my Win 10 Z-390e gaming computer. ....
What is the permanent solution?
Thank you. I downloaded and used Autoruns to keep the service from starting. I guess there's no was to get this service to behave when logged in as a standard user (rather than an administrator).
My pleasure to be able to help you. Although this is a band aid approach, for it is best to actually resolve the actual problem than to suppress the service. Yes repairs are best done as an Administrator.