I am having a devil of a time getting a new system to work, this is my first AM4 System, but I have several other AMD systems up and running, most on AsRock MBs.

In the first instance I'd suggest using the Clear CMOS link - refer to your manual for its location. The Ryzen 3 2200G needs a certain minimum BIOS revision (P4.40), which you may or may not have. The A10-9700E does not have that restriction. One other thing to check - make sure you have connected the 12 volt CPU power cable. It should be obvious but it's easily forgotten.

Edited by wussery - 15 Aug 2018 at 2:22am

I had the exact same problem. BUT I found the solution...

Configuration:
MB: ASRock Fatal1ty AB450 Gaming-itx/ac
CPU: AMD Ryzen 5 3600                                                                                               

PROBLEM: like most others with this problem, I would turn on the power, press power button on the case, lights on case would come on, fans would all come on, even the USB thumb drive would light up & the cpu would start to heat up too. BUT No Video output and no other signs of boot. I tried lots of things, to no avail. Until...

SOLUTION: I, am, stupid. I had no video because I had connected my monitor to the "onboard" HDMI output on the ASRock motherboard. But that will NEVER work because my Ryzen 5 CPU has no integrated video. So I popped my graphics card in the PCIe slot, plugged my monitor into THAT, fired up the power and boom, I see the ASRock bios on screen. YAY!

MY PAIN: OMG, I switched monitors, cables, cable types, I pulled the CPU off another machine (so much pain), changed the RAM, did a dance and nothing worked until I realized the mistake I had made. I was being too lazy to take the new graphics card out and plug it in first, I figured I would do that after I had installed Windows. That did not work out. I'm just glad I got this thing working at last.

Thanks so much for that info. I have no idea how I mistakenly connected HDMI to the MB instead of the video card! You rock.