Erasing Windows 10

Solution
To the op, be sure to format the drive after you delete all parts of Windows so that you can install a different operating system into your computer.

You will need to replace your Windows with some operating system.
It is very important to remember that a computer is a useless piece of metal without an operating system. You will need to install some operating system if you get rid of Windows.

Also, you can not delete Windows from inside Windows, you have to be outside of Windows to delete it.

For all of this I highly recommend some flavor of Linux.