So I have an Asus Z170I Pro Gaming with a 6600K. The first problems I had was the PC would freeze randomly. I could not get a stress test to duplicate the freezing. This happen several times over a week. I went to turn on the computer one morning and it would constantly power cycle on and off. At the time I was overclocked at 4.0GHz, 1.104v VCore with 3200MHz RAM. I have removed everything and reset the bios. It now turns on but it won't post and the CPU error light stays on solid. I have tested with the CPU only, and with CPU and RAM; the results are the same. I have checked the PSU with a tester; all voltages are within spec. My suspicions are this is either the CPU or the motherboard. Where should I go from here?