I recently purchased a GTX 650 TI that came bundled with a DVI-I to VGA converter.
My monitor is a Planar PX 2411MW.  it has HDMI, VGA, and DVI-D inputs.
I was using the HDMI input from my old video card, which was an EVGA 240 that supported HDMI and VGA outputs.  
The monitor received signals with the HDMI or VGA outputs on the old 240 card.  I just tested both inputs again.
When I installed the 650 card and use the DVI-I to VGA converter that is bundled, the monitor registers NO SIGNAL on D-SUB.
When I borrow my son's DVI-D cable and plug in to the DVI-D input, the monitor gets signal on the DVI-D input from the 650's DVI-D output.  I therefore know the card is working.  
 
So the oft-asked question:  why does the DVI-I to VGA converter not seem to provide a recognizable signal from the DVI-I port on the card to the VGA port on the monitor, yet I know all three inputs on the monitor work?
 
I will eventually go out and purchased a DVI-D cable, but I am curious why this does not work.
 
 

RainStryke

Does the adapter work on other cards? Might just have a bad adapter.

I did not try that as I have two other DVI-I to VGA adapters sitting around in my parts box that I am pretty sure are good and working that also do not work.
 

The 650 series seems to be flooded with issues from the time they were introduced and will soon be one of those cards we all wish never existed. I for one regret my purchase and it took me forever to get it to work well enough that I don't have headaches any longer. I still get random game shut downs I never had before. Numerous driver stopped working errors and other issues. If you are within your step up policy range and can afford it I would try and get something more stable.