So I just fitted a new AMD FX-8350 CPU into my ASUS M5A78L/USB3 mobo (upgrading from a Phenomenal II X4). My graphics card (AMD R9 700 series) looks like it's struggling to start (fans run for a second, then stop) and I'm getting no display output. I updated my BIOS, I've checked compatibility and PSU needs... Any advice for a novice PC upgrader? Thanks!