So my family got the Wii U for Christmas and have been using it nearly everyday, however, this morning the screen and no sound popped up. It turned on, and I was able to play using the gaming pad,but just will not pop up on the TV. We tried the AV cables, 2 different HDMI's (which were working with other stuff/consoles). We also plugged it in to 3 different types of TV's, and nothing changed.
Also, if we are forced to exchange our Wii, will it delete everything we have saved in our games?