Up to and including Windows 7, you could tap the Function 8 key as you power up the machine and the choices that show on the menu include Safe Mode with Command Prompt.
The three more recent versions, 8, 8.1 and 10, will show the StartUp Repair options when the system knows there's a problem. Sometimes turning it on and off at the power switch without letting the system time to load, triggers that state.
What do you hope to achieve using the Command form?
Up to and including Windows 7, you could tap the Function 8 key as you power up the machine and the choices that show on the menu include Safe Mode with Command Prompt.
The three more recent versions, 8, 8.1 and 10, will show the StartUp Repair options when the system knows there's a problem. Sometimes turning it on and off at the power switch without letting the system time to load, triggers that state.
What do you hope to achieve using the Command form?