This is familiar, i experienced the same with my HeroVII. Actually i had two different issues with it earlier.
1. The easiest way that solved the problem of not able to open it, was to open it up through control panel and sound tab. Then open the realtek program icon.
2. Other time there seemed to have been some issues during the installation process, so i deleted it and used driver sweeper and remove all left over files. Reinstalled it and it worked properly again.
Btw, is it the ROG interface realtek drivers you are installing?