I have just recently replaced the charger and today at school it would say it was charging for a few minutes then it would stop. At first i just thought it was the plug in because when i got home and plugged it in it was working just fine. Now it's doing it again and it only charges if i set it a certain way. Does anyone know what's going on? I don't have a warranty, And my dad said if it breaks he won't purchase me another one.