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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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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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