Symptoms
You experience glitches and artifacts in guest in Coherence or Full Screen view mode with two monitors, "


Cause
You probably have Nvidia 9400 graphic card which might have issues with Windows Aero and Direct X 10.Resolution
Please disable Windows Aero and Direct X 10 following the steps below:- Go to Virtual Machine menu ►Configure ►Options
- In Coherence section Disable Windows Aero

- Go to Hardware section
- In Video switch from Direct X 10 to Direct X 9.

