Do you have the second display currently extending your desktop? I think that needs to be turned off in the Windows display settings, so the second display is not in use before it can be selected as a clone of the primary.

Other than that, I don't know. There are some limitations when using the component out--stupid DRM crap.

Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris