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Welcome to Fixya. To be able to fix the issue please click on the link below. It provides the steps on how to clear the error message.
TI-84 Plus Silver Edition 2.43 RAM cleared Fix
If you hve questions please let me know. Thanks for using Fixya.
SOURCE: TI-84 Plus Silver Edition Problem
Have you tried 2nd then down arrow. This adjusts the brightness of the screen. You may need to repeat it a few times (you must release the 2nd key, you cannot just hold it down and type the down arrow many times).
~Connect the TI Connectivity cable between the PC and the calculator if you haven't already.
~Click on Start >> Programs >> TI Tools >> TI Connect >> TI OSDownloader
~Follow the on-screen directions to reinstall the calculator's OS. When or, if the calculator install the fresh OS goto step 4.
Remove all of the batteries including the round lithium battery for 5 minutes. After the 5 minute period, reinsert all of the batteries and turn the calculator on. Adjust the contrast if necessary.
If the above process did not work to turn your calculator on, try re-doing the above process. Next time extend the time in step 4 by 5 minutes to 10 minutes before you put all the batteries back in the calculator.
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