So I decided to unplug everything from my computer and plug it back in. When I tried to boot it up I got a black screen that said I need a boot device. I checked that everything is plugged in but why isn't my SATA being detected in my hard drive. I cannot boot my computer. I go to bios and it only shows up in CD boot. Even though my SATA is set as #1 boot priority it still fails to start up properly.