My girlfriends laptop had had problems after installing Win7; she can no longer use the wifi built into it and I find out this copy of Win7 is not genuine and she is unable to log into her laptop. I then thought of uninstalling Win7 and reverting back to vista because it has been an inconvenience. I went to the Microsoft website for instructions. After about ten minutes of going trough the steps to uninstall Win7 i read that "...there is no previous operating system to which you can revert." I tried doing it anyway but of course I didn't succeed. So I'm left wondering; is uninstalling Win7 and reverting back to Vista really impossible? If it is can I somehow fix this problem another way?