If Sticky Note Application is missing in windows 7, Please try this:
1.Make sure that Tablet PC Components checked in Windows Features.
2.Where is Sticky Note Application? It should be located at C:\Windows\system32\StikyNot.exe by default.
Recheck the C:\Windows\System32 folder. You will see some of the sub-folders in this location. If you scroll further down, you will see StikyNot file in a long list of files.
Now you can make a new shortcut for Sticky Note on the dektop.