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Chris Richardson Posted on Apr 10, 2007

Illegal instruction Whenever i turn my calculator on all i see is the phrase "illegal instruction" and it is frozen at that screen. Does anyone know a way for me to fix this?

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  • Anonymous Mar 17, 2008

    my calculator is frozen and the illegal instruction label is on the top i cannot turn it on or off

  • Anonymous Mar 20, 2008

    illegal insurction

  • truman123 Mar 29, 2008

    My claculator is frozen and it says illegal instruction at the top of the screen and i replaced all of the batteries and it still says the same thing

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  • Posted on Apr 11, 2007
Anonymous
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Joined: Jan 23, 2007
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Try to take all the battries out including the back up battery and put them all back in and turn it on and see if that fxes it

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