No Post Without B2 Code on Motherboard

[ETruth]

Please help me, I feel like I am going insane. I have had this problem since I built this PC, and have never encountered anything like it even though I have built many computers in the past for friends. I am having a problem where I cannot boot my PC and sometimes it takes about 10-15 minutes to get it to boot into windows. The PC will not boot unless I see the code "b2" on the motherboard's Q-Code read out. When it doesn't it goes through a normal post, but if it doesn't have that b2 code, then it will not post and I can't get into anything. The PC runs fantastically once it posts and I am in windows, and it has never once crashed or blue screened. Not overclocked, memory is running in XMP profile, other than that the BIOS is at optimized defaults because I am trying to diagnose. I have been through 2 motherboards and 2 power supplies trying to diagnose this. This has been driving me insane, please help. I am willing to try anything.

 

Specs:

Ryzen 9 3900X

EVGA RTX 2080 Super XC Ultra Gaming 

Corsair Vengeance RGB Pro 32GB (2x16) (On Motherboard's QVL)

Gigabyte B550 Aorus Master Motherboard (BIOS Version F12)

Crucial P2 500GB NVME SSD

Seagate Barracuda 2TB Hard Drive

EVGA SuperNOVA 850 G5 850W PSU

 

Accessories:
Corsair H100i Water Cooler

Corsair LL Series 120mm fans

 

Thanks for anybody that helps, I am losing my mind

[fuzz0r]

I'd recommend removing hardware until it boots up fine.

Have you updated the BIOS for your mb?

[ETruth]

11 hours ago, fuzz0r said:

I'd recommend removing hardware until it boots up fine.

Have you updated the BIOS for your mb?

I have done this, removed hard drive, swapped sticks of RAM, tried to boot with only one stick of RAM, disconnected fans, etc. Pretty much every non-essential part I could disconnect, I've tried, no joy. 

 

I try to update my BIOS as much as possible. There are the two newest revisions out now that I haven't updated to yet