The Windows 10 edition you have installed, as well as the system type (64-bit or 32-bit), can all be found listed in the System section of the Control Panel applet. The Windows version number for Windows 10 is 10.0. Windows 8 or 8.1 You have Windows 8.1 if you see a Start button on the bottom-left of the desktop and selecting it takes you to the Start menu. You have Windows 8 if you don't see ...
However, one of the easiest ways to remove, reorder, rename, or add items to Power User Menu, is to use a graphical program that can do it for you. One example is Win+X Menu Editor , which lets you add your own programs to the menu as well as Control Panel shortcuts, Administrative Tools items, and other shutdown options like hibernation and switch user.
Method #1 (on the fly):
Method #2 (view a list of file types):
In Control Panel Home, click Programs, and then click Make a file type always open in a specific program.
Or, in the Classic View, open Default Programs and then click Associate a file type or protocol with a program.
Unfortunately, neither method in Vista allows you to choose anything but the default programs, such as the programs listed in your files' context menus. If you want complete control over your file types, use this tool:
Method #3 (File Type Doctor):
Source
In many programs you can set file types associated with the program itself from settings. For example in Notepad++ you can go to Settings -> Preferences and select tab File Association. There you can add files that should be associated with notepad++.
This is not direct answer to what you asked but it should accomplish the same task. In case the program you want to set associations with doesn't have this option you will have to use your method.
