New Ryzen 2400g build - Only one HDMI port working

[Kimlangholz]

Hi.

I just assembled an ITX build with the Ryzen 2400G and the AsRock AB350 ITX motherboard - https://www.asrock.com/mb/AMD/Fatal1ty%20AB350%20Gaming-ITXac/index.asp

I've flashed the bios to the newest version and installed a clean windows 10. 

Until an hour ago I only had one display attached to the motherboard and now that I tried attaching my second one to the HDMI 2 port on the motherboard, I get no signal.

I've tried changing the cables to make sure the screen was working, and sure enough, display 2 comes to life when plugged into the HDMI 1 port, however, Display 1 goes black. 

I've also tried only connecting a display to the HDMI 2 port and still no success. 

Is there some kind of setting that I need to enable in either windows or the bios to enable two HDMI outputs from my Ryzen 2400G? or is there an error on the motherboard?

Thanks in advance for your time.
 

[SupaKomputa]

Have you updated the graphic driver?

[mariushm]

Make sure your second monitor is configured on HDMI. Some monitors switch between inputs scanning for signal and eventually default on other inputs or

Maybe go in display properties or AMD Control Center and hit "Detect displays"

[DrMacintosh]

Have you installed the drivers for the Ryzen APU? 

[Kimlangholz]

Well, this got embarrassing pretty fast.

You were right, just needed the driver for the APU...

Appreciate it!