Hi,
Check to see the ways of switching languages listed in the following link:
http://office.microsoft.com/en-001/word-help/switch-between-different-languages-as-you-type-HA010362284.aspx
If you have already done the methods listed above, then how about other programs such as Excel 2013 and so on?
Try to start Word 2013 in safe mode to check the issue.
Jaynet Zhang
TechNet Community Support
