I want to prevent windows sticky notes from starting with Windows. I don't use those anymore, but couldn't find where to remove them from boot.
You can delete this entry from the registry:
Or, try to delete this file C:\Windows\system32\StikyNot.exe (make a backup first).
Another option would be to disable the sidebar (Windows Gadget Platform). See a tutorial here: http://www.howtogeek.com/howto/3255/disable-sidebar-desktop-gadgets-on-windows-7/
Perhaps rather than remove, you would prefer instead to reduce the desktop-space taken by the sticky notes.
The freeware Sticky Notes Taskbar Hider does :