Hello, you don't need command line.. Do you have access to Windows?? If yes, you just need to go to the Settings:
https://support.microsoft.com/en-us/help/4026528/windows-10-reset-or-reinstall
If you don't have access to Windows, restart your PC taping F11 key to boot from your Recovery partition, and go to "troubleshooting" to "reset this PC".
Or if you don't have enough space you can use the "recovery manager" option.
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