I somehow managed to delete the “Show Desktop” icon from my Windows Quick Launch bar while I was configuring my new computer. I usually try to only keep six icons in the quick launch bar, and the show desktop icon is one of them.
I was hoping for an easy way to put the icon back, but I could not find an easy way to do it, so I resorted to trolling through some forums to find out how to do it. This is what I found out to restore the show desktop icon in the windows quick launch toolbar.
1. Create a text file with the following content:
2. Save it to your “Quick Launch” folder with the name “Show Desktop.scf”.
After doing that I now have my favourite six icons in the Windows Quick Launch Toolbar again.
Source: Lost Desktop Quick Launch