When you right click on the Start Button, you can select Open, Explore or Find.
Open shows your Programs folder. Explore starts the Explorer and allows access to all drives.
Find allows you to search and then run programs. In certain situations you might want to disable this feature.
To remove them:
2.Go to HKEY_CLASSES_ROOT\Directory\Shell\Find
4.Scroll down below Directory to Folder
5.Expand this section under shell
6.Delete Explore and Open
Caution: - When you remove Open, you cannot open any folders.