mmmmmmmmmmm Rich......Microsoft software licencing laws can be problematic....in October 2014 I purchased a licenced copy of MS Publisher and installed it on my downstairs HP desktop.....attempted an install to my Toshiba ultrabook using WIFI upstairs 20 minutes later only to be told I had exceeded concurrent installations even though the IP address was the identical one
Microsoft software [for domestic use] is for a
single installation.....which means you can install it on one PC a hundred times if using the same original IP address, but not two PC's in the same IP address location.....however a ten minute talk with one of Mr Gates henchmen
followed and all was finally OK with the second installation
So your IP address and machines signature would naturally be different to any other where a previous version of the W7 was installed & Mr Gates will know this when you attempt the new installation & this will cause issues
I think the scenario suggested by warspite is the best way to go
.....
BTW..it is easy to determine which version of W7 you have installed by going to ...
my PC, select the C drive go to properties then to driver......the select driver details ..& by example my ultrabook is System/32 bit......Derek