When I plug my monitor into my video card i get

Did you add a video card? If you have an AGP slot, it is best to put the video card in it. If so you need to go into the Device manager. Remove, disable or uninstall the onboard VGA driver. Go ahead and remove the PCI video card driver as well. Power down PC. Make sure monitor is hooked up to the Video Card, not onboard VGA. Power on PC. When Windows loads, it should detect the VGA card first, but if it detects the onboard first, ignore and don't setup onboard first. When Windows detects the card, load the necessary drivers when prompted. There is no need to reinstall the onboard driver for the video unless you wish to hook up two monitors.

there are two types ov problem
1,your desktop is agp but you insert pci express card
2,you didn't install a vga driver. GOT IT dude so out these things ok good luck........