Do you have access to the board's instruction manual for the wiring? If not you can download a manual here: http://www.gigabyte.com/products/product-page.aspx?pid=3010#dl
The case speaker might be in reverse. Blk is + and Red is -
Did you remember to plug in the PCIe cable to the card?
CPUs are pretty dependable. That would be the last item I'd expect to fail.
What is that add-on bracket that's shown with 2 ports and a Molex socket? Powered eSata?