Fixes most Office issues in a snap
How to Repair Microsoft Office
All versions of Office can be repaired in the same way using the Programs and Features utility in the Control Panel. To do this, click Control Panel on the Start menu.
The Programs and Features link is easier to find in Control Panel if you choose to show all tools instead of categories. To do this, select Large icons or Small icons from the View by drop-down list.
Click on the Programs and Features link.