New
#11
If 10 was activated you won't have to put 7 back on at all except for considering a dual boot. The 7 install could be a 32bit install since the 32bit 7 could easily run the XP games and apps that couldn't be run on Vista.. Vista saw Fat32 support gone while XP and 7 both share Fat32 support with 7 seeing that brought back allowing for the older 9x-XP compatible games and apps to still run even on the 64bit 10 Pro as far as some of those older 2001 titles that were 98-ME-XP compatible.
What I found with 7 when trying to get a 64bit 10 Pro VM going on the 64bit 7 Ultimate you would run into problems after download and install of the latest 64bit VM Player while the most recent Portable VirtualBox saw no problem at all. It does seem to lean towards the 32bit OSs however on VMs except for the first time seeing a Linux 64bit flavor connect to the web when opting for Hyper-V and using the network switch made up for the 7 Ultimate x64 VM.
The XP Mode went right on as you saw there as well but simply wouldn't connect to the web. Fortunately the XP Mode doesn't have an expiration date on that being a VM to start with. The 7 vm is a temp install only since it couldn't be activated despite connecting to the web. This is why mainly the only Windows vms are old like 98SE if not simply tossing the other guy's OS on which doesn't have any problem for a quick look at something newer.