Windows on new pc build

[plush nacelle]

I've had major problems when I switched between ADM & Intel CPUs with an existing HD, but within the same platform is wasn't too terribly bad, but you may have to spend some time in Device Manager uninstalling / installing proper drivers for your new board.

Do you have access to Windows currently?
https://www.techrepublic.com/article/find-windows-11-product-key/
I've usually found the easiest way to get my key was to run a linux build off a USB and pull the key from there: https://www.cyberciti.biz/faq/linux-find-windows-10-oem-product-key-command/