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The TI-84 Plus CE is a graphing calculator released in Spring 2015 by Texas Instruments. It includes a 2.8 inch color screen, USB port, apps, storage, and a 1200 mAh battery.

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TI-84 Plus CE My calculator says: Validing OS calculator will restart

My calculator says:

Validing OS

calculator will restart when validation complete. And starts blinking over and over again and I cannot fix it, I tried to charge or reset it and It doesn´t work.

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This issue is more common with newer TI-84 Plus CE calculators. Sometimes they won't charge dead batteries. You can try charging the battery in a friend's calculator or get a replacement battery.

If your calculator is within warranty, you can contact TI Cares and they may send you a new battery for free.

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Hello,

How do you contact TI Cares? Do you just email them? Also how do you know if your calculator is fully charged if you can not access the menu?

Thanks

da

@iceee84521 you can look them up. Their site tells you how to contact them: https://education.ti.com/en/customer-sup...

You would need a volt meter to check the battery's state of charge. TI use to have a charging indicator but removed it to cut costs a few years ago.

da

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Try the following as they seem to be the most likely cause:

  1. Remove the battery and let it sit for ~10 minutes, reinsert the battery and see if it resolves the issue.
  2. Replace the battery, it seems the most common fix is ordering a new battery, here is the link to buy a replacement battery from Texas Instruments (far cheaper than Amazon) https://epsstore.ti.com/OA_HTML/ibeCCtpI...

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