Volume button on taskbar doesn't show up any controls

my Windows 10 PC, it was extremely slow, and it takes 15 minutes for everything to be stable. I cannot get the volume button in the taskbar to be working.

(A) Try DISM / SFC:

(1) Open cmd.exe with Run as Administrator.

(2) DISM.exe /Online /Cleanup-image /StartComponentCleanup

(3) DISM.exe /Online /Cleanup-Image /Restorehealth

(4) SFC /SCANNOW

(5) Restart when all the above is complete and test.

(B) If DISM does not solve the issue (it may not), run a Windows 10 Repair Install.

https://www.microsoft.com/en-us/software-download/windows10

Windows 10 is running, so click on the Download button (not Upgrade Button) and select Run.

Start with the option to Keep Everything and see if that works.

The next options: Keep Data and Keep Nothing are more aggressive.

A Repair Install will update all the drivers it can and that will be helpful