Ok.
Go here to download your motherboard manual (if you need to).
You'll need to boot up into BIOS. Pg. 45 shows you how to get into Advanced Mode.
Pg. 46, click on Settings and then Advanced.
Under Advanced, you should see an option for Integrated Peripherals. One option there should be Integrated Graphics Configuration (Pg. 48).
Pg. 49, there should be an option for IGD Multi-Monitor. Set this to Enabled.
Save your changes and exit BIOS. This should enable the on-board graphics and allow you to set up the second display.
An easier option would be to just purchase a DisplayPort to HDMI or DVI-D to HDMI cable and connect to your graphics card.
-Wolf sends