Can't install Nvidia Graphics card

Hello!

I had a problem with my computer a while ago, and got some HUGE help here, so I thought you guys might be able to help me one more time. I put a GeForce 7300gs into my computer, but when I boot up, nothing comes to the screen. It doesn't need a power source, I disabled my integrated card that came installed, and I know it's in snug. I've never put in a PCI-express card before, am I missing something?

are you making sure that you are connecting your VGA cord into the the back of the 7300 (with a dvi to vga converter.) And not just connecting it into your motherboards existing Integrated graphics VGA port.

Can you post a little more information? Motherboard type/make, interface, OS, etc.? There can be some problems when you replace an integrated one with a newer graphics card.