Must have been one of the Windows 10 Updates that did it, but now, when I hover my mouse over the speaker, battery and clock icons, I get the highlights as to what they are!
This also works if you hover over the white icons next to the Windows (Start) button. Task View and Search the web and Windows pops up.
I missed those pop up button descriptions when W10 was first installed. Just found they are back this morning.
Thank you Microsoft 😀