How to enable DVI and VGA plug for Dual monitors on dx7500

[Cadallic]

I have a dell gx150 and it has onboard video that is dual monitor video card installed plus a AGP slot and i was wondering if i could run them both at the same time? I have DVI plug and one VGA plug. I also have a VGA plug on the motherboard, As far as I know DVI should just work, and no need to enable it anywhere. I have the latest drivers for the monitor,When I go into the display options, it only sees one monitor and in the advanced graphics properties, there is only one option under Operating Mode that says singe display.

Any ideas on how to get this working?

[Ikroop]

I can say most gigabyte ones disable it....but it seems to depend on the onboard video type. After all do they have dual AGP slots. In the BOIS settings there should be a choice of which video to boot with, or disabled, Make sure it is on, and change the bootup selection around to make sure each one that you need to check whether the drivers work. In display properties there should be a tab for "settings" You can get to display properties in the control panel or clicking the right mouse button when the mouse is on your background screen, not on any windows or icons.Some motherboards automatically shut off the on board video memory when a video card is installed. If you have both cards or a card and onboard connected, you should get a window that shows 2 monitors, 1 may be greyed out. You would click on it and there should be a checkbox below it that says "extend the desktop onto this monitor" and this should turn your monitor on.

[Deklan]

Normally when a PCIe video card is inserted the onboard is disabled. THe PCIe should have both ports working so yes dual is possible. if you have video on the motherboard, you should disable it (in the BIOS) if you have an AGP or PCI-Express video card attached. Could be anywhere from 8 mb to 64mb, it is usually adjustable in the BIOS. The BIOS setup screen is reached by pressing F2 (or Delete) during startup. This is an important step.

[Adham]

If you have a dual-monitor video card, you should have no trouble attaching two monitors. Set up the one with the VGA cable as the primary monitor and attach the DVI port to the second monitor. On old boards where onboard was like pci...it worked....not sure of new ones....what board do you have? If the second monitor does not have a DVI connector, get a DVI-VGA adapter from the manufacturer of your graphics card. If you have an ATI card, get an adapter from ATI.