Why i there as blurry Second screen "Ghost image" in left hand corner?

[DracoBlade]

Hi im new to this site/emulator and everything seems to be running right (only have tested God of war chains of olympus) but whenever i start up the game there is a smaller very light/transparent window with a mirror "ghost" image as if a reflection in the left hand corner of my screen...anyone know why this is happening or how to fix it? Thanks to anyone in advance