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Vista - ATI Radeon 2400XT - Dual monitors will not work

I spent almost 2 hours trying to add a second monitor to a Dell Optiplex 755, with an ATI Radeon 2400 XT video card.  I am connecting an identical monitor to the second port.  (This video card has a white 68? pin connector that I hook a 2-into-1 cable, for a total of 2 DVI ports).

I went though video preferences, and through the Catalyst software and am not able to get two monitors to work.  When I power the system on, I only get the Dell BIOS information on one screen.  

I know both screens are good.  I have replaced the 1-to-2 cable.  I have switched the monitors to different ports.  I have installed the latest drivers.....

What am I missing?
1 Solution
Don S.Commented:
Does the catalyst software recognize that there are two monitors?  Is the Dell integrated video disabled?
You are using a DMS-59 port, which splits into two DVI ports - does the card look like this?  http://www.amazon.com/Smart-Radeon-2400-Pcie-Card/dp/B001C7KMQ2  Does this card work with one monitor?  If the card doesn't output to two displays and you have the latest video card drivers installed, it probably is broken - it should just plug in and work.  You can try the card on another machine to be sure, or try another card in this machine.
tcampbell_ncAuthor Commented:
Figured it was broken.  I was just looking for some confirmation.


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