My computer
i5-4670, ASUS Z87M-PLUS, Corsair CX600M, G.Skill Ripjaws DDR3 1600 16gb (4x4gb), MSI Geforce 1070. 840 Pro (OS), 850 EVO (games), then a couple HDD for mass storage.
Initially the problem I was having is when playing Witcher 3 occasionally everything would freeze after forcing a restart the BIOS was unable to find the OS ssd. Completely shutting down then powering back up and the OS ssd was again showing up. I swapped cables between my OS drive and my games drive Witcher 3 would still occasionally crash but on reset the OS drive would be found not the game drive until a full shutdown and restart. I swapped the cable to a mass storage drive that is rarely accessed and no more crashes with Witcher going on a month. Figuring I had a Sata problem.
Today I upgraded from an iPhone 6 to iPhone 7. I never had a problem manually syncing my iPhone 6 over USB but when I plug in my iPhone 7 my computer crashes within a couple minutes. I reinstalled windows 10 to no avail to make sure it wasn't a driver issue. So I'm thinking either my motherboard or PSU but 600W should be overkill for what i'm running.