FS9 Display Problem / Screen Black-out.

Hi All.the last four flights in my PSS A340 have ended abruptly I'm affraid. what has been happening is this, I start the flight planning etc the normal way, the PSS plane performs admirably in every way, I'm not saying it's a PSS issue,but it's happened the last 4 flights in the A340 and I was wondering if anyone else has had this problem, I take off and fly as normal,I tend to stay in the 2D pit most all the flight, then like just now I went to the outside view to have a look at this lovely bird flare and auto deploy spoilers and then I engage reverse thrust.but just before I see any thrust reversers etc I get a black screen where FS should be, EG. the screen edge in windows is there,my mouse moves etc,and I still have FS Nav on the second monitor to my left visible,but FS just doesen't show anything.this is weird and I have tried it just now after the PSS flight and it doesent do it in a default plane.does anyone know what this could be please,thanksSteve.I just got this message when looking in the event viewer page > DCOM got error "The service cannot be started, either because it is disabled or because it has no enabled devices associated with it. " attempting to start the service ImapiService with arguments "-Service" in order to run the server:{520CCA63-51A5-11D3-9144-00104BA11C5E}