I currently have a Ryzen 5 1400 with 8 gigs of micron ram in an asrock ab350m pro4 motherboard. As I didn't overclock and wanted onboard graphics, I bought myself a Ryzen 3 3200g. The CPU is in the supported list of CPU's of the motherboard in their website so I thought it would be fine. I also made sure I updated the motherboard to the latest BIOS. The system didn't POST after I installed it. I took my RAM out and placed it in another RAM slot. After that I got a POST. I opened the BIOS and everything showed up correctly, but after I restarted it was back to the no POST thing. I have no clue what the problem is. I tried replacing the 3200g with the 1400 and it still booted up correctly.