If the computer doesn’t recognize the calculator was plugged in, then you’ve likely received a defective calculator and you’ll need to contact TI Cares and use your warranty to get a replacement calculator. If the computer recognizes the calculator was plugged in, then it still works, there’s something wrong with the display. Compare with similar items This item USB Power Charger Cable Compatible with Texas Instruments TI-84 Plus CE Graphing, TI 84 Plus C Silver Edition Calculators Charging Cord USB PC Charger Charging Cable Cord for TI-84 Plus CE Graphing Calculator Price 795 595 Sold By atabletparts MEKOKO. If none of the above work, then plug the calculator into your computer. A blinking cursor should appear after a few presses. Press the button then repeatedly press then the up arrow. You should also verify that the contrast isn’t too low. You should check the backup battery as well while you’re at it. Assuming you have the TI-84 Plus or TI-84 Plus Silver Edition, you should check that your main batteries are new and facing the right direction. This question got moved under TI-84 Plus Silver Edition, but the TI-84 Plus Silver Edition does not use a rechargeable battery, it uses four AAA batteries. OK first, I need to be sure I know what calculator you’re using.
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