Hi,

Try the below mentioned troubleshooting steps to fix this issue:
1. Exit all Office programs.
2. Click Start
3.Type regedit in the Start Search box, and then press ENTER.

Take the back-up of the registry edit by clicking on the file and then click on Export and save the back-up on the desktop.

User Account Control permission
If you are prompted for an administrator password or for a confirmation, type the password, or click Continue.
3. Locate and then click the following registry subkey:
HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\W ord\Data
4. On the Edit menu, click Delete, and then click Yes.
5. Exit Registry Editor.
6. Restart Word.

Hope this works.

Awaiting for your response.