Do a Search for WINWORD.EXE When found, double-click on that file and see if Word opens with a blank sheet as it should.
If so, set up a shortcut to WINWORD.EXE by doing this:
1. right-click on the file WINWORD.EXE and a menu will drop down
2. Point to "Send to" and click "Desktop (Create Shortcut)"
This will put a new shortcut to MS Word on your desktop which should work.