If you want to open the Command Prompt window on your Login screen or the Boot screen in Windows, here are different ways to do it.

Open Windows Command Prompt with Admin rights. In order to enable the Search Box on the Windows 10 lock screen, execute the following command: "<FULL PATH OF THE MACH2.EXE FILE>" enable 17917466 ...

If you run Windows 8 or Windows 8.1, you can still boot into a command prompt without loading the full Windows GUI if things go wrong – here’s how.

In Windows, just typing “cmd” into the taskbar search box and hitting Enter launches Command Prompt, but for some of these commands you need administrator privileges.