Looks like a Windows computer problem. I doubt you are going to get much help on this forum, but it sounds like a setup or configuration problem for the Realtek console. For whatever reason, it seems it is currently not controlling your PC's audio. I suspect your answer will come from some Google searches along the lines of "Realtek console not working" or similar. Or see if Realtek has its own help desk or discussion forum.
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Agreed that audiogon isn't likely to be of much assistance. If you don’t get help from the above sources, maybe also try posting at: https://www.diyaudio.com/forums/pc-based/
In my experience diyaudio is one of the friendliest, most helpful corners of the internet. I wish this place had their culture...