I have just had a Windows clean re-install carried out.  Since re-installing FS2004, I have an odd problem.    When I get to the 'select aircraft' screen, I get a black rectangle in the aircraft view screen.     The rectangle occupies about a sixth of the aircraft view portion of the screen.     Then, when I select 'fly now' the programme closes down.     I have found that I can get round this problem by starting with the default aircraft, clicking to reduce the screen size, and then loading the aircraft of choice.      I can then fly normally BUT, whenever I click on 'full screen', the programme shuts down.      Can anyone offer any assistance please?