Friend is building a new Ryzen system. I have 0 experience so I am asking the [H]ive mind for some suggestions. 2950x CPU asrock fatality x399 mobo corsair vengeance lpx 3200mhz ram - Listed on the Hardware compatibility list System is DOA. It will not boot other than slow flashing red light on the asrock board. He's tried two different power supplies, both brand new. Another set of ram. Two of the fatality x399 boards and just tried a gigabyte. All the same thing. No power up, no post, no work. He did use the bios update procedure for the asrock and it appears to update, he gets the green flashing light and it completes according to the manual. Even with latest bios, no boot. Anyone have any helpful thoughts on what might be wrong. At this point I think it has to be the CPU or CPU installation but he is using Kyle's install video on youtube so I doubt he's doing that wrong.