I recently built a rig with trippel psu and it did not want to recognise my hdd. Did not show up in BIOS, also tried to enable the sata ports in BIOS. I tried with multiple motherboards and sata cables. Also tried with only one psu. I tried with multiple hdd's and now none of them work anymore! If there is any information you would need to know just comment and i'll reply.
(I really need these disks to work, they are worth a lot!!)