To solve the issue, you can try the process below :

Formatting the calculator:

1. Connect your calculator to your computer.

2. To reset your calculator, press the [2nde] and [del] ([suppr] for the TI-83 Premium CE) keys at the same time. While holding down these buttons, press the RESET button behind the calculator for 3 seconds (with a pen).

After 3 seconds, release only the RESET button while holding down the [2nde] and [del] ([suppr] for the TI-83 Premium CE) keys; you will get a blank screen with the message "Waiting .... Install operating system now ''.

Please follow this link for Updating OS Process by clicking here. (English).

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