I have the AB350 Gaming-ITX/ac board with Ryzen 2200G processor.

The first problem was that it didn't work because of old BIOS.

So I had the BIOS updated at the shop where I bought the board. They said the update went fine and it now has the latest version (it was yesterday).

Which means the board was working, at least with their hardware.

But it still won't boot the Ryzen 2200G, even though there is a small progress.

Before the BIOS update only the CPU fan started spinning and nothing else happened.

Now it gets at least to keyboard detection (keyboard LED lights, or it beeps 5 times if keyboard is not connected) but there's no image on monitor.

No other hardware is connected (yet), only CPU (and fan), RAM, monitor and keyboard (and power supply).

What I tried:

- Switching the monitor between HDMI_1 and HDMI_2

- Switching RAM between slot 1 and 2

- Clear CMOS. After that it took longer to start and the CPU fan speed changed a few times, but still no image

Is there anything else I can try?

- Mobo: ASRock AB350 Gaming-ITX/ac (with updated BIOS)

- CPU: Ryzen 2200G

- RAM: Crucial Ballistix 3000MHz 8 GB (one module)

- PSU: BeQUiet! 350 W

It powers up and keyboard seems to be working, pressing ctrl-alt-del does reboot (the CPU fan stops and then starts again).

But there's no video signal.

It doesn't produce any beep-code (but beeping works, it does beep 5 times if keyboard is disconnected).

Have you tried a different cable? Sometimes it turns out to be as simple as an incompatible HDMI cable or monitor.

You can also try an HDMI -> DVI or displayport adapter and see if that gets you a display. 

I hope this helps.  

I didn't suspect HDMI cable or monitor because I use both with other devices and they work.

But just to be sure I tried another cable and display and guess what- it works! 

The other display also works with the first cable I tried.

So the good news is that the computer is working.

Now I just need to get it running with that first monitor.

Maybe it's connected to display resolution because the monitor that doesn't work is 2560x1440.

The one that does work is 1366x768.

So maybe it needs either better cable or some change in settings to work with higher resolution.

Are there any graphic card options in the setup?

I ran through the setup but didn't see anything useful.

From what I have seen around the web I get the feeling it's something to do with the cable. Maybe pick up an HDMI 2.0 certified cable and try that. Failing that, the adapter/s I mentioned above may be your best bet.

(The board only has HDMI connectors, luckily the monitor has pretty much all of them: HDMI, DisplayPort, DVI and D-Sub)

One more question:

Since I can now get to setup, I noticed that the RAM config is a bit different than it should be.

The module is DDR4 3000MHz 1.35V CL15

This also shows in setup in the part about XMP profiles.

However, on the OC Tweaker tab, the DRAM frequency is DDR4-2133 and DRAM voltage 1.200V.

Both items are set to Auto. 

Should I just overwrite these to what I think is correct, or do something else to make it run on the "official" configuration?

The monitor had signal auto-detection disabled for HDMI *facepalm*.

It worked just fine with DisplayPort or D-Sub and I didn't realize it might be disabled specifically for the HDMI port.

Thanks everyone and especially Xaltar for help. 

Now just to figure out the RAM settings and install OS and it's done :)