Trying to research the pinouts or trying to wrap ones head around the confusing morphology from analog to digital monitors (especially where flat panels are concerned) could be a huge chore. I think you could save yourself a whole lot of trouble by throwing a few bucks at a new adapter. I use a DVI to VGA adapter for one of my monitors. They make a DVI-I to VGA adapter you may be able to find one for about 6 or 7 dollars.
answered Jul 21 '12 at 23:41
Pin C1 on HDMI = Pin 1 on VGA
Ground Pins on VGA: 5-10
Ground Pin on DVI is 14, Seems like there should be more but I cant see any.
No Connect pins on VGA 4, 11, 12, 15
What I would do is test the cable for continuity, they make special testers for this that you can buy or you can rig something up with a battery and LED. Test the adapters pin out and make sure all the pins connect with eachother
answered Jul 22 '12 at 11:01
I read up about my card and it's dvi-d and said I could use a dvi-d to d sub and I'm just frustrated on what adapter I need but I tested all ports on the card to make sure everything works and it does. I'm just confused on the adapter I need