I have NEVER used the different USER ACCOUNTs before.
But I looked it up online & have now created another one.
I restarted my computer & everything looked very different.

But I made it to the WINDOWS style section & found that
the THEMEs were working fine for the new user.
The ShowDesktop icon was not visible ...
in fact there was no QuickLaunch bar !
So I googled it & now have the QuickLaunch bar with a ShowDesktop icon.
But clicking on ShowDesktop icon still does not work

Does this mean that I have 2 problems ?

#1 non functioning ShowDesktop icon
#2 partially corrupted user profile

Is there a way I can fix #2 ? I REALLY hope so because so many of my preferences are all gone in the new user & it would be a lot of work to get everything back to the way I like it.