Hi,
If the problem only appears in Microsoft Word, please reset Word Data and Options registry subkey test if it helps,
http://support.microsoft.com/kb/921541
Please test with other windows program (Notepad.exe) or Office program, if the problem still exist in other program, this issue may causes by Windows, you can create a new Windows profile test this issue.
For the detailed steps on how to create a new user account, click the link that match your Windows Operating system:
Fix a corrupted user profile:
Best regards.
William Zhou
TechNet Community Support
