Before I changed from a 750w to 850w power supply. I tested my CPU in a friends x470 board, and it works flawlessly. I took everything out, reset the bios. Reinstalled all components. Disabled cpb and pbo, and didn't have a random reboot till the following morning. Still have kernel power error 41. It does it at idle and sometimes under load. I re-enabled cpb this evening. So we will see.