Question about Texas Instruments TI-89 Calculator

1 Answer

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?

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 2 Answers
Re: illegal instruction

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

Posted on Apr 11, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points
Texas Instruments TI-89 Calculator Logo

Related Topics:

511 people viewed this question

Ask a Question

Usually answered in minutes!

Top Texas Instruments Calculators Experts


Level 3 Expert

93861 Answers


Level 3 Expert

7983 Answers

Stevan Milanovic

Level 2 Expert

243 Answers

Are you a Texas Instruments Calculator Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides