New
#11
To Clean install wo upgrading, you need GenuineTicket.xml generated on an activated qualifying system.
But you had a raw HDD.
You could try the old HDD and generate the xml file, then put that on the install media
replace the old HDD with the new HDD and follow
Clean Install Windows 10 Directly without having to Upgrade First - Windows 10 Forums
or
You could Activate Windows 10 by phone
Navy might have a method I'm not aware - he often does (or reminds me of one I've forgotten)