This is similar to the -- error code on the 680i, but may point more towards RAM issues. Clear the bios manually by removing the battery for 5 – 10 minutes. Cycle the ram in the primary dimm one by one, remount the cpu and remove all peripherals from the system. If the issue persists take the board out of the case and put it on the plastic clamshell and boot it outside of the case to ensure it is not an issue with a grounding or short circuit. If it persists, try a different psu or cpu if possible.