^ Go to the Start menu (windows icon) > click All Programs
> scroll down and right click on the program(s) whose icon(s) you want on the desktop > hover over Send To
until the side menu opens > click Desktop (create shortcut)
. The icon for that program will then appear on your desktop.
If you just mean the default Windows icons (my computer, network, recycle bin, etc.), just right click on an empty part of your screen > click Personalize
> click Change Desktop Icons
> select which icons you want to restore > and then click Restore Default