This is my problem Leadtek A350XT (5900XT) 128MB -> Quadro FX3000 /w Rivatuner 14.3 (detontor 45.23) When I doing some video conversion by TMPGenc, it crash after several minute, state that memory reading error. (Covert Xvid video to MPEG-2 video) After I change back to gefore 5900XT (Forceware 60.72), problem gone. Any suggestion on this one? I ran memtest on my memory (system ram) and it said it's fine. Is it problem from display??
If there is nothing wrong with your mobo/RAM/CPU then I guess it's a problem of instability since you are using rather old drivers with your 5900XT card. Try using 45.28 drivers, those seem to be very stable when used with a Quadro.