built a computer 2+ years ago and it worked great until a few weeks ago mobo was the culprit had a asrock 990fx professional replaced it with a asrock 970 extreme 4 plugged everything in and turn it on and it brings up the asrock page with bios options but cannot use keyboard to select anything or get past that page unless i unplug all sata devices then it will bring up page with cpu and ram specs any advice on what to do now or what to try have removed all hardware and reinstalled a few times now cleared cmos etc