Solved Can't get Windows 7 64 bit to recognize 3rd monitor

December 5, 2012 at 16:20:56
Specs: Windows 7, 4 gigs ram

Hi Everyone,
I've been trying to set up triple monitors on my Dell Optiplex 760 using Windows 7 Ultimate 64bit. I cannot get the 3rd monitor to work or be recognized. I just installed a new graphics card, it's the GeForce GT 630. I got this card because it has three outputs, 2 DVI & 1 Mini HDMI. Also, it was one of the only cards Fry's sold that was small enough to fit in my computer.

Can I only use one type of connection at a time? For example: the two DVI connections are working perfectly and are currently running dual monitors, but the HDMI connection isn't working.
Note: my 3 monitors are all the dell U2412M. These monitors do not have any HDMI connection, so I'm using a HDMI to DVI adapter. Could the adapter be the problem?
Can I use a DVI splitter on the graphics card to get the 3rd monitor working?

Please let me know your thoughts to any type of solution for my current set up. I've literally spent about 15-20 hours thus far trying to get this to work.
I would try putting a another graphics card in, but I don't think I have another slot inside the Dell Computer.

I am only using this computer set up for business. I use photoshop, excel, etc... I am not using this computer for any gaming.

If anyone takes the time to assist me w/ this problem, thanks so much in advance!

See More: Cant get Windows 7 64 bit to recognize 3rd monitor

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December 5, 2012 at 17:23:26

I done think you going to get it to work. I have never seen a graphics card yet that will support three monitors. The case is that it is probably two DVI or one DVI and the HDMI.

To support three monitors the hardware would need to have three separate graphics engines to compose the image and that is getting a bit too much to put on one card.

The simplest thing would be to read the help files that came with the video driver for the card. If it supports three monitors it ill say so.


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December 5, 2012 at 18:41:56
✔ Best Answer

You should have gotten an AMD card that supports EyeFinity.

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December 5, 2012 at 19:44:14


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Related Solutions

December 6, 2012 at 04:37:59

Look for one that says "Low Profile" on the info if your case is a compact case.
NVidia cards only support up to 2 monitors on one card.
For photoshop, avoid cheaper video cards if you want better and faster image update/refresh. More video memory as well as more system memory will also help your photoshop experience.

You have to be a little bit crazy to keep you from going insane.

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December 6, 2012 at 06:22:36

Thanks for the info. I had no idea I should be looking for a "Low Profile" Graphics Card..... very useful information.
Cost really isn't an issue on this, so I'll be going for the best card that will fit in my computer.

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December 6, 2012 at 16:52:17

What do you mean by compact enough? Are you talking about the height of the bracket, or the length of the card?

Low profile means a shorter bracket for slim cases.

For general information, Matrox makes cards and equipment to run from 1 to as many as 4 monitors. Used a lot by stockbrokers. See the link below.

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December 6, 2012 at 17:57:27

Look at:
if you have the minitower, you might just need a shorter than average card
If you have the small form factor and possibly the desktop, you would need the low profile card.
with the full model number others could tell you for sure, but the picture when compared to yours, should help. Dell specs sheet on your specific model should also give you the parameters for your card.

You have to be a little bit crazy to keep you from going insane.

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December 6, 2012 at 20:30:49

If money is no object then check out some of the Matrox cards. I work for a health care company and they use them in the imaging department. We use cards that support 3 and 4 monitors

Here is a Matrox card that supports 3 monitors -

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December 13, 2012 at 08:37:42

I wanted to let everyone know how I resoved my issue.
I purchased an ATI Firepro 2460 Graphics Card and removed the GeForce GT 630. The Firepro 2460 was simple to install and works perfectly for three (or four) monitors. This is a Low Profile Graphics Card that fits into my mini dell optiplex 760. Works perfectly with Windows 7 64 bit. My desktop extends to all three monitors and works well w/ normal business applications, e.g., word, outlook, excel, photoshop, etc...
If you don't know much about computers (much like myself), don't listen to a sales rep at any of the big companites such as Fry's, B&H, etc. Do the research online and in forums like this, contact the manufacturer and figure out the issue yourself. I was steered in the completely wrong direction by four different sales people just wanting to make a sale, when they had no idea how to create a solution for my goals/needs. I wasted about 24 hours installing and uninstalling graphics cards that didn't support 3 monitors. And then wasted more time driving back and forth to return/exchange cards.

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