I own an i7-4930k and an Asus P9X79 Pro and I have a weird issue when I set my OC to 4.2 GHz or higher after saving the settings in the BIOS. The weird issue is that after saving the BIOS settings and exiting the BIOS, instead of restarting right away, my system will shutdown for 3 seconds and power back up. This shutdown issue does not happen at less than 4.2 GHz. Also when I go back to stock settings from 4.2 GHz+ I get the same shutdown issue for 3 seconds. It does not seem to matter what the CPU voltage is set to because even setting it to 1.25v on the vcore, it still has that same issue with shutdown after exiting and saving BIOS settings at 4.2 GHz+. Is this a known issue with the 4930k on this motherboard once it hits 4.2 GHz or is it an unstable OC that is causing it?