Hi,
I would like suggest you try the following methods and check if they are helpful.
1. Ran System File Checker (C:\windows\systems32\sfc /scannow) and repaired corrrupt files.
2.Troubleshoot fax problems
http://windows.microsoft.com/en-US/windows-vista/Troubleshoot-fax-problems
Regards.
Spencer
TechNet Community Support
