|Post your system specs, Your video card make and model, your power supply make, model, wattage, and amperage on your 12Volt rail(s), and everything you have tried.|
Are you able to access your BIOS set up? Have you set up the correct video adapter in your BIOS?
Is it AGP, PCI, or PCIe video card/motherboard?
Does your video card require a 6Pin PCIe connector? Does your power supply have one? Are you using a Molex Y adapter to power it? Is the Molex Y adapter plugged into 2 Molex plugs on different wire bundles?
What exactly do you see and hear.
You have to be a little bit crazy to keep you from going insane.