x570 failed

Hello, I currently run a 3700X + 5700xt on an MSI x570-A pro, gaming and doing office work at 4K120Hz. I had planned to get a 5800x3d and a 7900xt next month, and to put my old CPU and GPU in my son's B350 computer, which is currently running a 2400g on integrated graphics. However, after a day...

Hi, I just put together my first build with the following pieces: CPU: AMD Ryzen 9 3900XT Cooler: be quiet! Dark Rock Pro 4 Motherboard: MSI X570 Tomahawk ATX AM GPU: Nvidia RTX 2060 Super 8GB - Asus turbo RAM: 32GB (2x16GB) G.Skill Trident Z Neo DDR4-3600 C16 SSD: Samsung 970 EVO PLUS...

I'm constantly getting error code B2 on the x570 Gigabyte Master. Apparently its something to do with legacy option rom initialization, and the Vga error light is on. My gpu works fine and i've used another card on it, tried a different pci slot....nothing. Tried updating the Bios via Q flash...