Disable New Volume Control UI and Restore Previous UI
1. In Registry Editor, go to following key:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\
2. Create a new key MTCUVC under CurrentVersion key.
3. Now in right-side pane, create new DWORD EnableMtcUvc and set its value to 0
If you want to restore new volume control UI, delete the DWORD EnableMtcUvc.