I recently managed to update my BIOS for my M5A97PRO using a Sempron 145 and a stick of 4GB HyperX Predator 1866Mhz borrowed from a friend. This system continued to work fine when the Sempron 145 was replaced with an FX8320. However, when I used my 8GB Corsair Vengeance 1600Mhz RAM(1x8GB), the system would not POST(no beep) and nothing would appear on screen. The system recognised the RAM and it even passed the systems memOK test(Which it would never do with the Sempron), but as I said, it shows no sign of wanting to get into the BIOS.