Hi, my name is Chris and I'll be happy to help you today!
I think what we should try first is a repair of Office
You are using Windows 7 right?
If so here is how you do it
Go to your start menu and select control panel
Once in control panel choose "Uninstall a Program"
Find your version of Office in the list and select the button at the top that says "Change"
An Office install window will come up and repair should be one of the options. Select that and hit next. Go through the process here (may take a bit). Once it is done, reboot and try using Office again.
Let me know how this works for you! We can ofcourse continue if need be
And dont forget to rate using the smiley faces!