Need help with my TI-83 Plus

This is the first time that my TI-83 Plus has given me any problems. I've had it for about three years now, and it has worked flawlessly.

About a week ago, I was playing baseball on my calculator. When I quit, I got a message that said my batteries were getting low. I didn't think much of it, and just figured I would get around to replacing them once I got new batteries. A few hours later, I played some more games on my calculator. This time, the game randomly stopped, and it told me

Waiting... Please install calculator software now.

and faded, then turned off.

I figured replacing the batteries would solve the problem. As soon as I could get some new triple A batteries, I put them in my calculator, expecting it to be just fine and dandy like it had been for the past few years. It didn't work out quite as I had planned. It still gives me that same message, and fades, then turns off.

Does anyone have any ideas what could be wrong with it? Having a graphing calculator is a requirement for Algebra, and Chemistry, and I can't figure out how to get this damn thing working. I need help as soon as possible. If you have any idea on what might be wrong, please let me know. Thanks in advance.

That really sucks. I try not to play too many games on mine, and if it says low batteries I change them then. Check the texas instruments website I guess.

Check if your backup battery is full. MAYBE, just maybe that has something to do with it. Sounds like you have to reinstall the callculator software.

http://education.ti.com/us/product/apps/83pos.html

Hit "download" by your calculator. It'll tell you to log on - use zelaron@zelaron.com, password zelaron. From there, it should be easy to figure out..

Thanks so much BlueCube.