Hi you could wipe with kill disk then run your install,it is a full install not a upgrade disc
I hope you gave it a 16th review:grin:Same thing happened again. This time bought a copy of Home Premium from a third party vendor on amazon who had 100% positive reviews of 15 or more customers- some 'stating' that they were happy with their genuine copy of windows. And guess what: it didnt work because, once again, microsoft tell me its registered as an MSDN version. So whilst it is genuine it explains the knock down price these guys can sell it at.
A warning to all...