Dear D-A-L:

I am trying to uninstall my Realtek High Definition Audio Driver but it shows me this problem in attachment.

I also restarted the computer and without doing any other activities, I tried first to uninstall it, and it still shows the same problem, what is wrong here? thanks for your help in advance!

Try to use Driver Sweeper, first: Guru3D - Driver Sweeper
Where did the new driver come from?