Solved Window 7 detects too many monitors?

[GARoss]

This is weird. I have 2 monitors & 2 graphic cards. Recently I changed the 2nd monitor to a DVI connector. I have Display Fusion installed & noticed when I sent a window to the other monitor it disappeared! I checked Control Panel/Appearance & Personalize/Screen Resolution & Windows 7 now detects 3 monitors! I checked the so called 3rd monitor & it indicates using a generic driver. Selecting "Detect" fixes the problem until I reboot my PC & it repeats all of this.

Would re-installing the driver fix this?

Open to suggestions.

 

[GARoss]

I tried re-installing the latest drivers & that didn't fix the issue. Weird!

Any other suggestions?

 

[AddRAM]

@ OP What is display fusion and what is it used for.

Get rid of display fusion and start over, reinstalling your latest drivers.

 

[Dude]

I think AddRam is right, maybe a re-install of displayfusion would cure it. I'm not sure what function of displayfusion you are using it for, but ultarmon is an alternative.

 

[GARoss]

Thanks for the responses.

Display Fusion allows one continuous panoramic photo across both monitors (Windows 8 has this feature) as well as a switch on each window to quickly move windows back & forth between monitors. It's a nice feature.
But, everything worked perfectly before switching connectors from VGA to DVI. I'll try re-installing Display Fusion. Maybe it will reset itself; worth a try.

 

[GARoss]

It's not Display Fusion. I've completely uninstalled Display Fusion & still get the error.

 

[GARoss]

The non existing 3rd monitor issue is resolved by removing the DVI connector & re-installing the VGA connector. What possible difference it would make from one cable type to another to cause this is beyond me.

Both the latest video driver & Display Fusion software was uninstalled/reinstalled without correcting the problem. So, Display Fusion had nothing to do with the non existing 3rd monitor issue. Only replacing the DVI for the VGA connector worked.