I have a Casio fx-CG50 AU.
I have used it for the past year and it has worked incredibly well. The batteries have run out before, but I have replaced them and all worked well. Recently, the batteries died again. I have replaced the batteries and now my calculator is stuck on the select language screen.
No buttons work, the only thing I can do is press the reset button on the back. Very annoying. Need fixxed ASAP!
Thanks, much appreciated.