2. Go to e.g. the Word orb (top left in Word), then to Word Options > Resources > run Microsoft Office diagnostics. That may fix it for all office programs.
My Computer
At a glance
Vista, Windows7, Mint Mate, Zorin, Windows 8from 1.6GHz Duo to i7
Computer Manufacturer/Model Number
HP, Dell, Gateway, Toshiba - 4 laptops and 2 desktops