This might not be the best place to post it but i'll post it any way. I have the TI 84 plus ce-t graphic calculator but it stopped working. It doesn't turn on anymore. When i try to charge it i get the orange light indicating it is charging. It will turn green after a while indicating it is full. But if i unplug and replug the cable it goed back to charging again. Also the pc software doesn' recognise it anymore. My calculator is about a year old. I think it might be a battery issue but if you guys know better that would help a lot