I have a Surface Pro I bought just after they came out. Was working OK up until this. Now it will not work unless the charger is attached, and the battery does not appear to be charging. Last night when I plugged it in it showed 34%, same as this morning. I checked the charger and it is definitely plugged in. Also, when I unplugged the charger from the outlet, the screen immediately went blank and the unit turned off. When I pull the magnetically-attached plug out of the Surface, it turns off. Also, it sounds like a little electrical "pop" when I pull the plug out. The Surface will not turn back on again until the plug is put back in and juice is flowing. Fortunately I got a service contract when I bought it from Best Buy, but I was wondering if anyone else had encountered such problems and what their experience was.