Subscriber Des M. recently discovered the Show Desktop button in Windows 7. You may have found it yourself but in case you haven’t, it is at the bottom right corner of the desktop to the right of the time. Show Desktop is easy to miss as it is a small, clear button.
Click on Show Desktop and all your windows are minimized so you can see the desktop. Click on it again to put all the windows back where they were.
And the keyboard shortcut for Show Desktop? Windows+D