The instruction on the link you posted are not clear to me. Did you intend to post that for me to verify my windows is licensed because if so, it is. The other instructions are about hardware change but not clear how I can take those steps if I don't even have windows. Please clarify.
its actualy very simple, during installation do not enter any windows key,leave it empty,
once installation ends, it will ask you to sign in to your online account, once you do so, thats all was needed, it will activate on its own, or you can use activation troubleshooter to help it activate faster...
it may activate right away or there might be some delay (windows activation servers works in mysterious way), but no key needed, online account uses digital license which is stored within your online account
if it doesnt activate after few days, contact microsoft support from windows apps and they will fix it, if theres some issue on theirs end
windows 10 can be downloaded from
here, install it on USB, then you can boot from that USB drive to start installing windows once you have finished your PC upgrade