Hi, I have a Dell Opti Plex 320 which has a motherboard ATI Radeon 1100 graphics configuration. I want to set this PC up with a dual monitor configuration. I added a PCI NVIDIA GeForce 8400 GS card. After successfully installing the GeForce 8400 card when Windows starts up it defaults to this card. The other monitor does not start up. When I go to the properties in device manager for the ATI Radeon display adapter I see an error that states the following...Device cannot start. (Code 10). When I right click on the desktop and go to properties and display settings I see two monitors but if I select extend my desktop to the ATI monitor it does not work. Any ideas?