Techno Source Kurio Kids Tablet With Android 4.0 - 7 Inch 4 Gb "down buttons won 39 change" Questions

won't turn on, even though battery is full. What's the problem? I was suggested to try reebooting it by holding the power button for a long time, at least 30 secs. It didn't help. Then

...won't turn on Okay, well for Christmas I got a Nextbook 7 tablet which is Android based. I've been using it since then. Two days ago I put it on a charge and left the room for about two ...

...down etc.. so i let it run out till it ran out of battery then i went to charge it & now it won't charge turn on or do anything i took it back to the the to exchange it but they told me i had ...