Hello MrCaffeineX, I am afraid to say that this motherboard has been out of support since July, 2011, http://www.intel.com/support/motherboards/desktop/sb/CS-032519.htm
However, these are some recommendations we can try:
1. Take the system outside of the chassis. Make sure you disconnect all other components from the motherboard and take the product out in a non-conducted surface.
2.Clear the CMOS. The correct way is, while having all components disconnected from the motherboard, disconnect the BIOS jumper and remove the battery for about 15-20 minutes.
3. You mentioned that you have the BIOS updated to the latest version. So you may want to search for the latest firmware for your graphics card.
4. Tested a different power supply. Based on the card specifications, it is necessary a 500W or greater power supply to use it. Testing a higher power supply will help us to discard any possible power issue.
If doing these basic troubleshooting steps is still not working in the motherboard, there might be a compatibility issue between these components.
The following link will provide you the list of tested peripherals.