Hi Nancy,
As per the issue description you are getting printing preview error only while using on Mozilla Firefox. Everything work fine when you use Internet Explorer. It means there is no issue with printer and Operating System as everything works fine on Internet Explorer. There might be some settings corruption in Firefox which is not allowing you to print properly.
So, I would suggest you get in touch with **Mozilla Support**and see what they suggest.
Hope the information provided is helpful. Do let us know if you have any more concern related to Windows. We will be more than happy to assist you.
Regards,