Windows 7 wont duel screen but Ubuntu will (Nvidia 8400GS)

I'm running windows 7 and my geforce 8400GS graphics card. I'm trying to duel screen using a siemens LL 3220T monitor and a Acer X223HQ monitor. The Siemens is connected via the VGA port and the Acer is connected via the DVI with a converter plugged in allowing the VGA monitor to connect to the DVI port. The problem is the Acer monitor doesn't work! Windows doesn't detect it at all! I can rule out hardware issues because when I run ubuntu using the exact same set up both monitors work perfectly well! I tried downloading the newest drivers for my Nvida card but still no success. The monitor doesn't show up as being connected on any of my settings! Can anyone help me?


Kindest regards,

Peter McArthur

I trust that you have the NVidia drivers installed.

In the NVidia control panel, in the pane at the left, chose the "setup multiple displays" task. Are both displays detected?

Thank you for your reply,

Yes I have installed the latest set of Nvidia drivers for my Graphics card. While using the set up multiple displays feature, the only monitor detected is the Siemens (VGA) monitor and the Acer (DVI) isn't detected.