Why won't my Premier Elements 13 video production run when I push the play arrow? It worked yesterday.

Question

Premier Elements 13
I am in the process of making a movie with Premier Elements 13; it has been functioning fine--until today. For some reason, it no longer plays when I press the play arrow button to preview recent additions to the script.  I have rendered the files.  I have exited the program and reopened it.  I have turned the computer off and on.  None of his helps.  Any suggestions?

Answer 1

ATR,
Thanks for your reply and comments.
My Premier Elements program 13 is running on a 64 bit computer with Windows 8.1, with all drivers updated—I think.
When I press the space bar instead of the play button, still no movement at all.
When I created a new video with just a couple of pictures, still no luck getting the play button or spacebar to work.
So far, I have not found the Adobe Premiere Elements Prefs file, even with your instructions.  When I get to "roaming" there is no file for Adobe in that folder.
Another clue:  When I began to add narration, the microphone did not work, so I changed some settings relating to audio and recording.  The problem with the play button began, I think, as a result my getting the mike to work.  But since I am not exactly sure what I changed, I can’t go back and reset those settings.
BTW, when I close PE 13 and open PE 11, everything that I created in 11 works fine.  That is, the play button advances the time line indicator, as it should.  So, the problem seems to not be in my computer settings, but something unique to PE 13.
Dave [Sage—but not feeling very sage-like at the moment.  ;-)  ]