The most basic step for troubleshooting Word involves locating and deleting your existing template file. In Word this file is named Normal.dot
Perform a search in Windows for this file (make sure to enable searching of hidden files) and once found delete the file. When Word is opened the next time a new template file will automatically be created for you. The path is usually something similar to the following.
C:\Documents and Settings\USERNAME\Application Data\Microsoft\Templates
Do you have any anti-virus program that has an Office plug-in enabled? If so, disable them to see if that helps.
Also try starting Word using the /a switch. This will stop any add-ins from being loaded. If this solves your error problem, you know it's an add-in causing the trouble.
Click Start -----> Run and then In the Run dialog box, type winword.exe /a (with a space between .exe and the /a)
You can also try to unregister and re-register word by entering the following into the same RUN prompt. You may need to change the path to reflect the true location of Winword.exe This will re-write some registry values that may have been corrupted.
Click START --> RUN and type the following commands one by one.
"C:\Program Files\Microsoft Office\Office\winword.exe" /unregserver
"C:\Program Files\Microsoft Office\Office\winword.exe" /regserver
Regards,
Rollin