I have updated my box with Asrock H87M Pro4 mb, I7 4771 cpu, 16 GB memory. Reformatted 1TB drive with Ultimate Win 7 64 bit with no problems, but when adding my EVGA GTX 580 video I cannot seem to make it work. Bios doesn't see it. Asrock simple said its a compatability issue and get Newegg to exchange it, but my 30 days return is up today and missed my window. Asrock took to long for me to get a response.