Question X870 system (AM5) not posting first time

[BrainGlue]

I built a system using the new Ryzen 9800X3D, ASUS TUF X870-Plus motherboard, G.Skill 2x24 Gb ram (listed under the motherboard’s QVL), and TUF RTX 4070 Ti Super OC Edition.

When I turned on the computer for the first time, nothing appeared on the screen although the computer was clearly powered on (fans, RGB, etc. were running). I waited 10 min or so but the screen was still black. I eventually shut off the PC by holding the power button, then turned it back on. Still nothing. I then unplugged the power cord of the PSU, held the power button (to discharge any residual power), replugged the power cord, then turned it on again. This time, it worked and I haven’t had any issues since then.

I recall I had something similar happen to a B650 setup with the same CPU, before I exchanged the motherboard for this new X870 . Is this failure to boot on first attempt typical on AM5 systems? I find it odd that it wouldn’t post the first time, but works after completely powering off the system.

 

[Lutfij]

Rams are fully seated in slots A2 and B2? Usually the first boot for AM5 takes a little time to train the memory/platform.

I recall I had something similar happen to a B650 setup with the same CPU, before I exchanged the motherboard for this new X870 .
Did you have an OS installed on the drive prior to the motherboard swap/replacement? How are you cooling the processor? Might want to inspect the CPU's socket for any bent or broken pins.

 

[BrainGlue]

Rams are fully seated in slots A2 and B2? Usually the first boot for AM5 takes a little time to train the memory/platform.

I recall I had something similar happen to a B650 setup with the same CPU, before I exchanged the motherboard for this new X870 .
Did you have an OS installed on the drive prior to the motherboard swap/replacement? How are you cooling the processor? Might want to inspect the CPU's socket for any bent or broken pins.

Yes, the RAM sticks have been fully secured into A2 and B2 slots. I previously forgot to mention that while the computer was powered off and PSU was unplugged, I pressed the RAM sticks in case they weren’t seated properly the first time. However, I didn’t notice any of them budge (thus, they were already secured), and I recall securing them pretty tightly before the first boot. So I’m not sure if it was because of the RAM.