Motherboard doesn't recognize my SATA 3 drive

Hi
I know this topic is very old! but I have the same problem now!
But I don't have any other hard disc on my PC and this SATA 3 supported hard drive is only one! I don't have any OS on my pc. when I connect hard drive to my p4p800-x mother board it doesn't recognize my sata 3 drive! please help me what should I do!