I have been looking at the manual for your motherboard and I have a couple of questions.
1. Did you put the video card in the Blue PCI 16 slot? If not, then do so.
2. Did you put your ram in the first socket Dimm_A1? If not, then do so.
Also, Asus motherboards are very picky about the ram they use, I see that your ram is not listed on their preferd ram list. So, what you might have to do is go into the Bio's and go to the advanced listing and go the memory configuration and set the latency and timings for your ram manually.
Using the Auto functions for Asus boards causes a lot of problems. It has been my experience that you have to set the ram timings manually most of the time.
Look up the ram you are using and find out what the timings are supposed to be and set them manually.
If you have questions on doing this ask and someone will help you.