Ok, back with another question Microsoft, and others, haven't been able to answer.
I built a computer and installed Windows 10. Installed a QuadroFX 560 graphics card with two DVI-I outputs. This card, and another graphics card, both split the screen in Windows 7. Since the Qradro wouldn't split the monitors I installed the other card and it wouldn't split the monitors either.
Now all I can I can get, in Windows 10, is mirrored monitors. In Display Setting the computer can't find the second monitor. I have tried with Aero Snap off, and on, suggested by Microsoft, and still mirrored monitors. I have tries Windows button + Q and the troublershooter can be used for, according to Microsoft, a "view all" button is supposed to be in the top left hand corner and it not. I tried Windows button + P and I get the message: "Your PC can't project another screen. Try reinstalling drivers". I have reinstalled the drivers and even went to NVidia and their app says the drivers are up to date. I have tried several other things and nothing works.
So does anyone here have a suggestion that would split the monitors on this computer running Windows 10. Thanks.