NVidia GT 430 HD Problems

I just bought a GeForce GT430 and it installed fine using the VGA. It also works on DVI but when I connect a HDMI Lead it does not show on my monitor. Do I need to enable something for it to work or did I do something wrong?
Answer #1
Check graphics setting (nvidia control Panel)
Answer #2
you swap the monitor over to HDMI input ?
you disconnect VGA & DVI ?
Answer #3
Found out that there is a problem with the HD port on the monitor. Just ordered a HDMI to RCA cable to resolve it.