Command prompt is a windows utility that is simply a command line interpreter. It can found on Windows Operating System. For MacOSx and Linux based Operating system their command line interpreter is called terminal.
Sharing you the ways that i know on how to open or access the command prompt.
1. Go to Start > Run, and simply type CMD or command
2. Go to C:\Windows\system32 directory and look for CMD
3. Open the task manager and simply go to File > New task then type CMD
4. Open task manager and simply go to file > New task while holding the CTRL key on your keyboard
