Recently got a P D 820, Asus P5LD2 Deluxe, eVGA 7800GT, 2x512 OCZ. Everything is fine, but the mobo won't detect my hard drives. I went into the BIOS and it doesn't detect anything in the way of HDs. I know it is connected in the right spot, so I unplugged all HDs but the one I want to put...