Yesterday I ran into a little problem while working with Office 2013 in a Fusion box on my Mac. The screen turned black while running any of the Office 2013 applications. There are 2 solutions :
Solution 1 : Disable 3D acceleration in Fusion
Solution 2 : Disable hardware acceleration in Office
I prefer the last solution, disabling the acceleration only in Office 2013. Found no noticeable difference afterwards although.