Word bolds everything

Problem: When user click to bold text, everything turns to be bolded

This web helped:
http://word.mvps.org/FAQs/Formatting/WholeDocumentReformatted.htm
1. Format | Styles and Formatting

2. Select the style you’re using (presumably Normal) in the task pane

3. Modify

4. In the Modify Style dialog, clear the check box for “Automatically update.

5. Check the box for “Add to template.”

6. OK