Originally, I had FSX Deluxe running on two video cards/monitors.
Card 1 is an ATI Radeon 7000
Card 2 is an NVidia GeForce 6800
I never had an issue until I installed Card #3 which is an NVidia GeForce 8500 GT. I can only get it to work on one monitor - the new one.
In display settings, the only device that's listed is the new card. It's as if the two original cards don't exist. Yet all three are working fine outside of FSX.
I don't know if this is the cause but your sucking your power supply to the point where you going to blow out your machine.
I'm surprised that the Sim isn't CTD crashing to desktop.
Not likely. The PC is a beast built for recording and editing audio.
Go into your FSX config file and make new profiles for the other cards
FSX must only be making one for the new card now So you'll need to do it manually
I went into what I think is the config file (config.js?) using Notepad, but have no clue about what I'm looking at or how to make new profiles.
I've also tried complete uninstalling and reinstalling and it still only sees one video card when it used to see at least two.
I think U have to see if on the regular desktop mode U can have dual monitor. If no U have nothing to do with flight sim.