I was putting games in my friends TI-83. When I went to run one the calculator froze. It won't respond to any keys. I took out the batteries to try to reset it and nothing happened. What should I do? I only have until tomorrow to get it working again. I'm desperate. Please help me with any suggestions you have. Please E-mail any responses immediately to jcross@willowtree.com don't click reply you need to use this address.