To prevent other people from opening Computer Management through the Manage item on the Computer context menu (as exhibited in the screen shot below) in your PC, you can remove it from the menu according to the steps illustrated in the article.
Video guide on how to remove Manage from Computer context menu on Windows 8:
Step 1: Open Local Group Policy Editor.
Step 2: Find and access the "Hides the Manage item on the File Explorer context menu" setting.
In more detail, you can locate it according to the path of User Configuration/Administrative Templates/Windows Components/File Explorer/Hides the Manage item on the File Explorer context menu.
Step 3: In the next window, choose Enabled and click OK to enable the setting.
After these steps, when you right-click the Computer icon, you will find that the Manage item has been successfully removed from the context menu.
Password Recovery Software