# Mathematica shift-enter problem [closed]

Would really appreciate if someone can help with this problem:

When I first open a Mathematica note book, say you do 1+2 and press Shift+Enter. As expected, I get "3" as the output.

Now suppose you want to 4+5. But after pressing shift-enter, the program just sits on it, without giving 9 as the answer.

Only way to get the output was to abort the evaluation, and to re-execute it.

This happens for any other calculation (other than the very first one you run in the session). What this means that every calculation I have to do twice to get the output.

This has never happened to me in last 25 years of use, and I cannot seem to find the problem. Even uninstalled the program and reinstalled it and still doing the same thing.

By the way, I am running Mathematica version 9(64bit) on Windows 7 Professional (64bit)

Thank you so much for any help.

Tim

## closed as off-topic by Kuba♦, dr.blochwave, m_goldberg, MarcoB, user9660 Nov 18 '15 at 5:29

This question appears to be off-topic. The users who voted to close gave this specific reason:

• "The question is out of scope for this site. The answer to this question requires either advice from Wolfram support or the services of a professional consultant." – Kuba, dr.blochwave
If this question can be reworded to fit the rules in the help center, please edit the question.

• Welcome to Mathematica.SE! I suggest that: 1) You take the introductory Tour now! 2) When you see good questions and answers, vote them up by clicking the gray triangles, because the credibility of the system is based on the reputation gained by users sharing their knowledge. Also, please remember to accept the answer, if any, that solves your problem, by clicking the checkmark sign! 3) As you receive help, try to give it too, by answering questions in your area of expertise. – bbgodfrey Jan 23 '15 at 2:18
• I think there is a way to reset all MMA settings. I cant remember which post, but definitely has been asked before. – Chen Stats Yu Jan 23 '15 at 2:21
• Welcome to Mathematica Stack Exchange. Please reserve the bugs tag for problems either confirmed by Wolfram employees as a bug or considered a bug by community consensus, even in cases like this one which really seem like a bug. – Mr.Wizard Jan 23 '15 at 2:22
• As @ChenStatsYu comments you should try a reset as described here: support.wolfram.com/kb/3274 -- I hope it works as that's a nasty problem. :-/ – Mr.Wizard Jan 23 '15 at 2:23
• I'm voting to close this question as off-topic because it has been abandoned by the OP. Further, it is too localized; i.e, it applies only to the local situation and needs of its poster and answers will not benefit others. – m_goldberg Nov 18 '15 at 1:10