Yes he played it on windows 7 and it turned out the same, he is trying it right now with no cheat codes to see if you are correct, and it is not steam, it is a brand new disc version i bought and it did work on both xp and 7 at the same time, since it is only one computer and one ip address i think that constitutes one pc since it can only be used in one windows and not the other at any given moment. Our kaspersky is like that, i have 3 licenses, one for his dual boot computer on xp and 7 which only uses one license an one on mine and on my account it identifies 3 windows being protected but only using 2 licenses. By the way this is SOF3 Payback and it is installed completely separately on each operating system, so xp has absolutely nothing to do with 7 other than being in the one pc. Also i have done all updates and video drivers to this prior to game installing. = = NO IT STILL DOES IT