I have a Surface Rt which was a present. It has a problem with the HDMI socket which only connects if strained in one position. Have tried two cables but its the tablet that's wrong. I intend taking it back under guarantee but if they offer another tablet how can I get all my saved data from games and installations onto another device?. My kids have several games where they have worked for months to get to advanced scores. They certainly won't be happy to have to start again!. So how can I back up everything before taking it back to the shop?