Just curious, because up till now I've not really bothered with it. Today I've turned it on but it still seems to make my MFD's (and the display on the FMC) just go dark regardless of the plane I'm flying ... I'm running XP 10.20 (stable). In case it's an issue with my card, I've got AMD Radeon 7800 series card and running the latest Catalyst 13.1 drivers (stable). I've tried searching on this but the HDR thing doesn't appear to be current anymore ... any input/ideas greatly appreciated! The Edit ... probably should've reworded the subject as "Is HDR rendering in XP still an issue for some?"