my father is trying to upgrade his computer with my old video card. he has an hp workstation xw8200 (yes i know its not meant for gaming.) he currently has some nvidia quadro that plugs to normal pci port. i gave him an nvidia 7800 256mb pci-e. he has a pci-e port and a 600w psu. is there something that needs to be done when going from pci gpu to pci-e gpu? his monitor recieves no signals when the new card is in. maybe power since card is 650w recommended? any recommendations are welcom, thx.