Activation of windows 8 pro with media centre was taken with two keys First for installation and another for media centre. software was ATM 3.5 Beta. While trying to restore with above key it return with critical error and in log show to fail in key installation. if media centre install in win 8 by another key (Other than second of above) and trying to restore it become succeed. Is it possible: (1) to uninstall windows media centre and backup as it were be a back up of cleaned installed and activated copy. (2) Upgrade windows 8 to 8.1. Backup of that windows 8.1 and restore that on a clean windows 8.1 installation.