My n7 is just over 2 years old. I was using it the other day, no issues. Set it aside, it had about 40% battery. a few hours later, went to use it again. It was completely dead. Tried several websites for a solution. Holding the power button for 30 seconds doesn't work, holding the power and down volume button for 15 seconds, that solution fails. I tried to charge it using a usb cable plugged into my laptop as suggested on one site, no luck. So far nothing has worked. Could it be a completely dead battery? If the battery is loose, how do I get the back off? It is not easy as popping off the cover as some have suggested. Any other solutions out there, or should I just get a new tablet. I need a 16gb that is not junk but I can't afford more than $120. for one either. Thanks for any help!