...all to do with my continuing problems of Computer freezing and lock-ups...

When I change "views" in the Flight Sim when it is running, eg; panning round, changing direction, entering a new location, etc, is the changing Data handled by the System Memory, or the Graphics Card Memory?
Often, when I select or enter another view, it seems as though the "Memory", whichever it is, gets "confused", and the computer will lock up:
Frozen screen, Keyboard and Mouse inactive, etc.
So...which Memory Module is actually handling this changing Data; System or Graphics?
(At the moment I am experimenting with changing/replacing my System Memory Modules around, in case a module is faulty)...

Any ideas, Mates?
Paul.