SymptomsVideo artifacts appear in Windows virtual machine after connecting projector or second monitor. After you remove the projector or monitor Windows screen flashing into many pixels.
CauseThis problem is connected with WDDM 1.1 Intel drivers behavior, which has been implemented in Parallels Desktop 7 for Mac.
ResolutionIn order to eliminate this problem please do the following:
- Shut down the virtual machine;
- Go to Virtual Machine menu (or Alt+click on the Parallels icon in Coherence) --> Configure --> Hardware --> Boot Order;
- Insert the following boot flag:
4. Close Configuration window and start the virtual machine.