You can end
anything you want including Explorer.exe (windows explorer) --this will leave a blank desktop...no Icons no pics nothing just background screen.
In fact this way can be the faste way out of a
totally locked PC-- you end explorer.exe... then go to
file/new task/z(type) explorer.exe-- hit "enter"-- and bingo your whole desktop reloads for you.

just as if you had just logged on.