A family of Microsoft word processing software products for creating web, email, and print documents.
Word 97 does not have guaranteed compatibility with Windows 8.1, however all Word versions behave in the same way with respect to the normal template.
You can (and should) allow Word to prompt to save changes to the Normal template on exit. In this case, did you allow it to save the changes?
One change that will require saving is related to daylight saving time, so at the end of that, about 6 moths ago, there would have been a change that required saving, and it would nag until you did save. If you delete or rename the normal template, again it will prompt you to save the replacement Word creates, until you do.
There are several reasons why the normal template may not be saved correctly, and the first of those to investigate relates to orphaned lock files - see http://www.gmayor.com/what\_to\_do\_when\_word\_crashes.htm