I recently built a brand budget gaming system. I made sure everything was securely in place, and where they were supposed to be. The problem came when I plugged my monitor in and went to boot up for the first time.
The monitor would not come on, just stayed with the yellow light on. It also would not POST as far as I am aware. Since I have never used this MB before I do not know if it has speakers built in.
I tested the PSU by changing video cards to an older one that I know works. But that is about as much as I can think of atm.