DVI Connector only works with one DVI Port?

matadm

Honorable
Jul 9, 2013
6
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10,510
So i went and bought myself a new hp computer. Got it all set up, no problems. One thing to keep in mind, when I first plugged my monitor in, I put it in "Port 1." Decided it was time to put in my geforce gts 450 graphics card. Plugged it in, no video. So i was a bit confused because it was working earlier today in the computer i was replacing. So I took it out and plugged the monitor back in to "Port 1" on the hp computer, still no signal coming to the monitor. So I moved it to "Port 2" on the hp computer, still no signal. So I called HP and they decided that the computer was the problem and want me to ship it in to have it looked at. Afterwards I decided to continue messing around with it, plugged my old computer back in exactly the way it was before, no signal. The graphics card has 2 ports on it as well, so i tried moving it to port 2 on the back of the graphics card, still no signal. Then I plugged the HP back in graphics card still removed, plugged it in "Port 1" and obviously still no signal. NOW, I move it to "Port 2" on the HP computer and I get a picture. Startled, I now moved it back to "Port 1" to see if that worked. Nope, still no signal. Now to see if the graphics card would work again, I try both ports on graphics card and still no signal. Last time, I moved it to "Port 2" on HP computer and am getting a signal now, however this is the only port that the monitor seems to pick up. Two different computers, 4 different ports. Was working in my old computer with this graphics card earlier today, now it's not. Is it my monitor, the dvi cable, what could it be?
 

matadm

Honorable
Jul 9, 2013
6
0
10,510


No VGA, all are DVI. Basically, I have 4 DVI ports, 2 on the graphics card, 2 on the back of the HP computer. The graphics card was working fine earlier today. But The DVI cable only works in Port 2 on the back of the HP computer, no longer in the graphics card or in Port 1. I just ran to Best Buy to purchase a DVI cable, and issue happens with both of em.

*UPDATE*
From what it looks like, the monitor is only getting a signal from a Dual Link DVI-D port and not from DVI-I Dual Link ports.
 

matadm

Honorable
Jul 9, 2013
6
0
10,510


Yeah, that's what I thought too, but the issue is happening on the old setup with the old computer, which was working fine earlier today...