Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
Your case is very difficult. This is often a consequence of previous mistaken operations, or of having the register thrown in the trash or otherwise abandoned. I don't know what the situation is.
You theoretically have to sign in a clear ID, using the A, B, D, E keys at the top of the keyboard. Try pressing one of them. See if it ceases to say 'CLOSED' or is responsive at all some other way.
Or try a reset of it, to clear all codes from it... would that be appropriate? it would clear all codes from it.
I am sorry to hear that, but glad that my advice agreed with your common sense approach.
I have Opted Out, having nothing further to offer, which opens the case to other Experts in this category.