My PNY Geforce 7900 GS, Its a PCI-e card I just bought but when I start my computer I get nothing on screen. It doesn't have the right port for my monitor either on the back of the card, but it has this converter thing with it that allows me to pludg it in to the back of my video card. My problem is my screen never shows at all unless I take the video card out again. is there something I have to do prior to installing the card into my PC?