Just a thought and it may not make any difference or be related but, in
Control Panel, go to Accessibility Options and go to the General tab, if
there's no check next to "Make a sound when turning a feature on or off"
under notification, place a check there and click apply. If there is a
check, remove it, click apply, replace the check, click apply and see if
that resolves the issue.
Beyond that, who is the manufacturer of your keyboard? It's possible that
either the keyboard isn't compatible with the feature or if there's special
software installed for the keyboard it is interfering with the feature.
--
In memory of our dear friend, MVP Alex Nichol.
Michael Solomon MS-MVP
Windows Shell/User
https://mvp.support.microsoft.com/communities/mvp.aspx
Backup is a PC User's Best Friend
DTS-L.Org:
http://www.dts-l.org/