my tablet will not charge, it doesnt even show the charging screen, ive tried wiggling the charge cord around, nothing. how it happened? my parents drained it DRY when they used skype. i never let it get that low. there wasnt even 1% energy in it, how do i know? i turned it on and it showed the battery symbol with a warning triangle, it shut off, i plugged it in....nothing, no charge screen anything.....plz help? i even let it "charge" overnight"