AB350 ITX/AC & Ryzen 2400g. No video, POST, etc.

I can add just one thing here, if you get constant power on with no image for a couple of seconds then shutdown and the cycle repeats itself that is the AMD Memory Training function trying different memory settings to get the cpu to boot. Let it do this at least 3-4 times and it should get a boot, if not you need to swap the memory, even if its on the QVL it might not work because of a bad IC or too much interference on the power supply 3.3/5V rails.

Edited by cristy6100 - 28 Mar 2018 at 10:10pm

In addition, if you get as far as Windows completing installations, make sure you update windows fully before attempting to install the AMD chipset and display drivers. There have been reports of issues and instability if you install before updating. It would seem the latest updates add improved support for these CPUs.

Indeed you will need to update Windows, if you install the latest official build,  this is a must do step, else you will be greated with lock-ups and crashes in Edge and Windows settings and odd behaviour, install clean windows, and then update it and reboot then check again for updates, dont launch anything elese until Windows is  updated.