If you have Windows 10 installed, you can access Command Prompt from the advanced Startup Options. The process for the two is slightly different. There are two cases in which you might need to access the Command Prompt when you have Windows 10 installed, and when you have no OS installed. In any case, you need to access Command Prompt before you get to your desktop, if you ever get there. The fix often lies by fixing files from the Command Prompt, or by running a few checks to find what’s wrong. When something goes wrong with Windows, and we’re not talking the routine problems that it has but something where an essential file is corrupted, you often can’t fix it from the desktop.
