I had the exact same problem. Steps I took to fix:

Create a folder somewhere eg. C:\New Folder
Open the new folder in Explorer
Goto Control Panel > Fonts
Select All fonts in list and drag and drop to C:\New Folder
Windows will say it's moving the fonts but really it copies them
Select all fonts in the Font List and press Del to delete them all
This will delete all fonts except system fonts.
Then in the Font List goto the File menu > Install Fonts
Select your C:\New Folder where you copied your fonts to
Click Select All and then OK
A few messages will appear asking whether to replace existing system fonts, just Click OK !

After they have all been installed, try printing to a PDF from Word.

Hopefully you whould be back up and running.

Best Regards
Justin Nye
GrippleSpider Ltd - Web Programming & Design
www.gripplespider.com