How can I connect my second monitor via mobo?

[Evenleik]

My GPU, a radeon 7870, doesn't have a VGA slot, and I don't have a DVI cable. I plug in my VGA to my mobo's slot, and my screen doesn't receive a signal. Help!

 

[millwright]

A few specs, or links would help.

You probably have display ports, and or a HDMI.

You need an adapter HDMI to VGA, or Display port t VGA, or DVI to VGA

If you are just connecting a second monitor, a simple adapter should work.

If you are connecting a third monitor, both adapters have to be active, if using 2 display ports.

Some boards on-board video, is disabled, when you plug in a dedicated card.
Not all, but we don't know what your board is.


Edit
DVI to VGA, is the cheapest, and simplest.
http://www.newegg.com/Product/Product.aspx?Item=N82E16812816053

 

[Evenleik]

I have an MSI-Z77A.

 

[unksol]

You should use a DVI-I to VGA adapter, however you can also go into the BIOS and enable the onboard GPU and use both the dedicated card and the onboard GPU

 

[Evenleik]

You should use a DVI-I to VGA adapter, however you can also go into the BIOS and enable the onboard GPU and use both the dedicated card and the onboard GPU

I'm not great with any form of BIOS, do you know where I'd find that in the BIOS?