I recently bought a new SSD, a Samsung 840 EVO 500gb, and a new power supply, Rosewill 750 HIVE series. I installed my new PSU, and plugged in my SSD, and now my computer wont cant detect any hard disks, and therefore cant boot. I tried removing my SSD and changing back to my old PSU, but nothing works. It can detect my SSD, but cant boot from it.