Your problem will likely be that the your hardware doesn't have "digital entitlement" to run Win10 as it's never had an activated copy installed. Downloading from MS won't fix that problem because you either have to provide a key to activate or let MS verify the digital entitlement online, which your hardware probably lacks. That said, an unactivated installation will work just with a few limitations.
You'll need to create a bootable flash drive, boot from it & install.
https://www.microsoft.com/en-us/soft...d/windows10%20