Hi, i had a gtx 560ti which i connected 2 monitors, works fine. I tried connecting a third monitor to the onboard vga (Intel DH61CRBR) but it didn't work, so i bought a second video card, only slot available was PCI so i got an old geforce 6200.
With the 2 cards plugged in, i get img on just one monitor, the first card initialized by the bios gets the screen, while the other doesnt work. Usually its the 6200 who "is fine", and the gtx gets an "Windows has stopped this device because it has reported problems. (Code 43)".
I already tried uninstalling the drivers, reinstalling from windows, reinstalling from nvidia (normal and beta drivers), but nothing works, i just get one of the cards to work fine. Is there anything i can do to have a 3 monitor setup with that card or the onboard one?
I don't think you can run two separate video cards (at least for graphics). I have heard of some cases where you can run both onboard and a video card, but I don't know the details on that.
You might want a new single video card that supports 3 monitors to replace the GTX 560Ti, 6200, and onboard graphics.
Or... a usb to dvi plug... which will perform slowly, but will be cheap.
If you are going to mirror the same picture on two monitors, you can use a DVI splitter.