Cannot start lenovo ideapad windows

[bjaval]

I am able to get to c: prompt but I cannot a directory to execute windows 10

 

[Cycloid Torus]

That is a puzzle and a half.

If you can reach c: prompt, you are in command mode and 'exit' might get you where you want to be.

Otherwise, you can check https://www.howtogeek.com/235101/10-ways-to-open-the-command-prompt-in-windows-10/ to see if you can figure out how you got there