970a-g46 + Samsung Spinpoint F3 500GB Disk not spinning when connected to mobo.

I have just bought this mainboard, plus an FX4100 and 2x2GB 1600MHz Kingston HyperX. Two Samsung hard drives, F3 HD502HJ and HD322HJ

After assembly i had some issues with BIOS recognizing my disk, so i started to move things around, changing cables, et...