I've got a brand new Gigabyte 970A-DS3p with AMD FX 8350 CPU, 32 GByte RAM and Radeon R7 260X graphics card. DVD is connected to SATA 0, and SSD-disk to SATA 1. When powered on, fans (CPU/Graphics/chassie) are starting, but nothing more. No beep, no nothing. I have no connector on the ATX 12V on mobo. Could this bee the problem ?