I currently installed a new graphics card (evga geforce gt 440) into my HP Pavilion 500-267c and the new graphics card is installed but is not recognized by my computer! I tried to uninstall the graphic card that is already in the PC (intel hd graphics 4400) but I could not find it inside the PC. I was wondering can I use both at the same time and how can I fix my unrecognized graphics card?