My Word 2007 works fine in my Windows 10 Pro ( originally from Win 8.1.1 Pro ).
Troubleshooting suggestions only :
1. Run a system file check to look for corrupt files. It will try to do repair if any found.
Right click at Start button > select Command Prompt (Admin) > at the flashing prompt, copy/paste this.....
sfc /scannow
> press Enter.
It will take quite sometime. When finished, it will give you one of the 3 reports : (paraphrasing )
1. No integrity violation.
2. Found corrupt files and repair successfully.
3. Found corrupt files but unable to repair.
If report is #1. Your issue lies elsewhere.
IF report is #2, go see if everything is now working ok.
If report is #3, please do the following........
Right click at Start button > select Command Prompt (Admin) > at the flashing prompt, copy/paste this.....
dism /online /cleanup-image /restorehealth
> press Enter.
Again, it will take some time. When finished it will give you a report.
If it says operation successful, go see if everything is now working ok.
