F1Cessna172 FS9 electronic kneeboard?

Can you please try to invoke FS9 electronic kneeboard. In my F1C172 when I call it up, about the half of the bottom screen goes black, no 2D main panel, only Electronic kneeboard. When I close it the panel and the screen go back to normal. Is it a driver issue of nVidia or I messed something up in the cfg or flt files? GF6800Ultra FW 81.89 WHQLThanks.