The below steps show how to restore the Show Desktop shortcut if it has gone missing;

1) Open Notepad and paste in the below;

[Shell]
Command=2
IconFile=explorer.exe,3
[Taskbar]
Command=ToggleDesktop

2) Save the file as “Show Desktop.scf” – remember to use the quotes else notepad may save it with a .txt extension.

3) If you want the shortcut back on the quick launch bar either drag it there.