Technology Forum

Hello, I have a DELL OPTIPLEX 755 computer and I installed a MATROX G450 MMS QUAD video card in the PCI slot, this card can manage up to 4 monitors. I am having this error at windows startup that says there is a conflict with some of the video adapters of the video card and disabled them, I only can see 2 monitors working and the other 2 are shutdown. In the windows device manager I can see that 2 of the 4 video instances of the MATROX G450 video card have a yellow warning sign and are disabled with and error code 43. I already installed the latest driver for the MATROX video card and the latest bios for the DELL OPTIPLEX and still no luck. Can anyone help me ?. My goal is to be able to have all the 4 monitors working with my DELL OPTIPLEX 755.I am running 2GB RAM, windows vista BUSINNESS SP1 and DELL OPTIPLEX 755 MINITOWER COMPUTER.Thanks.