If your existing version WINDOWS 10 HOME then you will need to UPGRADE it first. 

READ IT:

https://xabeluk.blogspot.com/p/how-to-upgrade-windows-10-home-to.html

Official Windows 10 download link:

https://www.microsoft.com/en-us/software-download/windows10

How to Download [Instruction]:

https://xabeluk.blogspot.com/p/how-to-download.html

How to create bootable media [Instruction]:

https://xabeluk.blogspot.com/p/bootable-usb.html

How to install windows 10 [Instruction]:

https://xabeluk.blogspot.com/p/blog-page.html

How to activate windows 10 [Instruction]:

https://xabeluk.blogspot.com/p/blog-page_29.html

We recommended!!! Re-install Windows OS after very FORMAT without doing Activation. That mean activate OS only one time and follow our instruction then you have no need to activate again n again after every format. This can save your time and solve all future activation issue. First Activate OS and Install all essential System Driver and follow this- [Instruction]:

https://xabeluk.blogspot.com/p/re-install-pre-activated-windows.html