Does anyone know why my mx420 is now recognised as a Quadro 4 550 xgl in device manger?? I think I changed it to this with Riva Tuner somehow. I was giving my graphics card a tune up and just started pressing all the buttons in Riva Tuner (not quite as random as that but ) and the next minute ive got a Quadro 4 550 xgl. Ive reinstalled everything but windows and it hasnt changed it back. My 3d Mark 2001 is still the same, I just dont understand why it changed to that!