I just got a hyundai 19' with dvi and vga. Im also using a geforce 6800gt pcie with dual dvi. When i hook up the lcd with dvi it says no signal or just turns black. I can hook up the vga and works fine. But i have to use a converter to change vga to dvi. There is a setting on the lcd that changes the input to vga or dvi but i get nothing when i change to dvi. Is there something else i should look for? maybe drivers? or somewhere in the settings i can enable dvi? plz help thanks.