What should I do if the Win7 system desktop icon is missing?

Win7 system desktop icon is gone? When you encounter a situation where there is no icon on the desktop, we can first:
1. Press Win+R, enter regsvr32 /n /i:u shell32, be determined;


2. open my computer, tools, folder options, View, Hide extensions for file names to remove the hook, OK, and then open Notepad input:
[Shell]
Command=2
IconFile=explorer.exe,3
[Taskbar]
Command=ToggleDesktop
Save all files when they are saved, name it, display desktop .scf; save in C:Documents And SettingsAdministratorApplication DataMicrosoftInternet ExplorerQuick Launch directory!
3. Use win+d instead of display desktop function. Right click on the taskbar to display the desktop (S) instead of displaying the desktop function.