Good Afternoon. When I put my calculators in the charging station, some of the calculators will continually flash Validating OS.... Calculator will restart when validation is complete. I have tried letting them charge for some time, thinking that it will correct itself, which it doesn't. I also have tried using the reset button on the back of the calculator with no luck.
Our school purchased all of our math teachers a classroom set last year.
What should I do???
