...s very important to not use an object that can leave behind debris, such as a pencil.
• Verify on the back of the calculator if there is a pull-tab coming out of the battery door. If a pull-tab exists please pull it out to allow the battery to connect. If the calculator does not power on after ... https://education.ti.com/en/customer-support/knowledge-base/ti-nspire-family/troubleshooting-messages-unexpected-results/39297
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