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2 Graphics Cards - Not Detecting Both

I run a Nvidia GTX 275 Works flawlessly even if i use both ports on the back to use dual monitors.

If however i plug my Nvidia 8800GT in the second PCI-E x16 Slot the computer only recognizes the 8800GT which is in the second port and there is no GTX 275 showing in the Device Manager or Boot Menu.

So basically i plug in my second video card and my primary card just vanishes from the computer like its not even there.

Has anyone got an idea what could be the cause of this?

I have checked the drivers and its the same drivers at the moment for the 8800GT and the GTX 275.

I want to be able to run my 19" Widescreen Monitor on my GTX 275 and use my 8800GT Card for my tiny 15" Screen so i can play Games on my Primary card and be able to have Website open and viewable all the same.

(I'm not trying to run SLi as i know you need 2 of the same GPU and your motherboard needs to be able to support it, I don't like SLi so its all good so far.)

View 9 Replies (Posted: Oct 13, 2009)

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