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Only two of my display inputs work on my desktop PC, why is this?

Last response: in Systems
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July 11, 2014 9:36:00 PM

I have had my PC for about 2 years now, and recently I wanted to plug in my 29" smart tv in the analog input into my PC. The two inputs I use currently are both DVI, and they work perfectly. They are lower down closer to my video card. The other three inputs (HDMI, DVI, and an Analog)are closer to the top of the back end of my PC.

Whenever I plug anything into any of those inputs (the top three) nothing happens. The monitor/tv I try to plug it into only says "no signal". I suspect it is because they are not connected to my video card, but I am not sure why they would make outputs that are not usable.

Also, I cannot see anyway to move my video card could be moved up to work with those extra inputs, and I cannot see a way to put another, extra one in as well.

Please help I would like to use my tv with my PC as soon as possible.

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a c 90 U Graphics card
July 11, 2014 9:38:41 PM

if you use video card, those three output from the mobo will be automatically disabled

you can't use both graphic card and integrated graphic at the same time
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July 11, 2014 9:43:27 PM

AMD Radeon said:
if you use video card, those three output from the mobo will be automatically disabled

you can't use both graphic card and integrated graphic at the same time


Sorry I am not that great with computer hardware at all. I have an Nvidia Geforce GT 640, is that an issue with what I am trying to do?
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a c 90 U Graphics card
July 11, 2014 9:50:31 PM

gt 640 itself only support 2 output at the same time, gtx 650 support three :)  they are different gpu, dispite of similar naming
do not use output from the mobo, they wont work after you put gt 640
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July 11, 2014 9:52:10 PM

AMD Radeon said:
gt 640 itself only support 2 output at the same time, gtx 650 support three :)  they are different gpu, dispite of similar naming
do not use output from the mobo, they wont work after you put gt 640


So I would have to buy and connect a whole new GPU to get it to work? That sounds rather expensive and not entirly worth it...
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a c 90 U Graphics card
July 11, 2014 9:53:38 PM

well it is
dual monitor is easy and cheap. anybody can do that
triple monitor or more is different story :) 
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July 11, 2014 10:15:39 PM

AMD Radeon said:
well it is
dual monitor is easy and cheap. anybody can do that
triple monitor or more is different story :) 


Let's say I was to do this and upgrade to say a Geforce Gtx 650, and manage to hook it up correctly like the old one was. Would it would automaticly, and would it screw with anything else?
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