Restoring Show Desktop icon in Quick Launch

If the Show Desktop icon is deleted from Quick Launch,
the procedure below will recreate the file.

Open Notepad and enter the following text:

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

Save the new file as Show Desktop.scf then drag and drop the icon
on the Quick Launch bar or whatever location you want the shortcut to appear.

Or, this will also work:

Click Start, Run and type the following command:
regsvr32 /n /i:U shell32
Use copy and paste where ever possible. It's more accurate.

You could also use the keyboard shortcut:
windows key + m This will show the desktop.
And to restore its: shift + windows key + m

You can also use:
Windows key + D
Which acts like a toggle (Show and/or Hide)