cybrox

Just for protocol, in case anyone else runs into this. Yes, it works. I simply installed the old SSD in the new PC, went through the complete update process (careful to always select the right boot device during install...) and it activated itself. After removing the legacy drive and booting from the new SSD with already installed Win10, it automatically recognized it as activated as well and seems to be running smooth now.

So, I'm going to install win7 on the new hardware and upgrade it. Would it then be possible to just boot from the win10 partition again and it is activated? (Since I assume the online activation will then be hardware bound to the pc from which you updated your win7?) @GoodBytes Just giving them my old Product Key and Product ID Should be proof enough that I do own a previous version.

That's a pointless restriction from Microsoft's side imho, it'd be enough to just render the old key useless. Could I boot my old SSD with win7 on my new Hardware, upgrade it and then somehow use the upgraded key with the already installed Windows 10 Version on another SSD in the same System?

So, I've been running my PC on a Windows Ultimate OEM license that I directly got from an internal retailer for 4 years now. This weekend, I decided to finally upgrade my computer and also install Windows 10. Now, since my old PC was a bit trashed and I wanted to start over anyways, I created a boot stick for Windows 10 Pro (Since Microsoft stated that Windows 7 Ultimate licenses could be convertet to Windows 10 Pro licenses) and only backupped the information I thought, I would need for activation later. That being my OEM Product ID and the actual Windows Key. I installed windows 10 on my new Hardware (New Mainboard + CPU, new RAM, old Graphics Card and PSU) and it worked just fine. I skipped the key activation since I knew, that win10 does not directly take the old keys. So, the problem is, I have a fully set up Windows 10 now - that I'm pretty happy with already - and an old Windows 7 OEM Key that was registered for a different hardware. The problem essentially is... how do I get the key converted for Windows 10? I have read through a lot of posts and articles on this in the past hour and I do not want to delete this new win10 installation, reinstall win7 and then upgrade again. There must be some way, right?