I've recently been having this issue. Ill be playing FS9 for a decent amount of time (but nothing out of the ordinary), and I will suddenly develop an issue where the screen starts disappearing. And what I mean by that is, starting at the bottom, a black area the width of the screen begins to move up, taking up more and more of the screen. At the point it starts occuring, I cannot access the menu's, and am forced to shut down the simulator. It is quite agitating, and I have done nothing recently that would prevoke such an issue. The latest incident occured flying PMDG's B1900D at a freeware airport.
Operating Windows 7 Home Premium w/Service Pack 1 64-bit
HP Pavillion G6 Laptop
Intel Core TM i3 CPU
M 370 @2.40 GHz
RAM 4.00 GB
Haven't had this issue before, so Im a little confused about it.
Any help is appreciated