MSI Z270 PC MATE problem

Getting information about failure due to surge. This have happened on two different PSU. My old one: Corsair CX 650W And the new: Seasonic FOCUS Plus Gold 850 (SSR-850FX) I bought the Seasonic thinking it was the PSU. Sadly only the CPU and MOBO have been left, and somehow I don't think its the CPU. (ram, PSU, have been changed, GPU is none) BIOS of course updated to the newest. Did anybody have similar problems? Running: i5 7500 (no K, so not overclocking) HyperX 16GB 3600MHz Predator RGB CL17 (2x8GB) Seasonic FOCUS Plus Gold 850 (SSR-850FX)