pci express upstream switch code 12

Question

Motherboard b550 aura pro v2, CPU AMD r5 5600x, gpu RTX3060, RAM 16 (2-8), power supply 650 gold, sd m.2 240 kingston a 2000, hd 500, window 10. When working on the computer, a blue screen with the error whea.uncorrectable error flew out. After restarting the system, the error was repeated and the operating system stopped starting. I could not install it on an SSD because the device in the Windows installer stopped being determined, I eventually installed it on the HDD and an error appeared in the device manager pci express upstream switch port code 12 device 500-series chipset - switch upstream port, Id:pci\ven_1022&dev_43e9&subsys_02011b21&rev_00. In addition, windows 10 does not detect the network adapter and does not see the ssd. Changing drivers to new ones didn't help. The most remarkable thing is that the Bios determines everything. Also, on the installed Windows, the CPU, GPU, RAM in AIDA64 pass a crash test. I also installed the GPU in another system unit that works properly. Tell me the solution to this problem. There was a problem with starting the PCI device\VEN_1022&DEV_43E9&SUBSYS_02011B21&REV_00\4&5f22ecf&1&020A.Driver name: pci.infGUID Class: {4d36e97d-e325-11ce-bfc1-08002be10318}Service: Lower filters: Upper Filters: Problem: 0XC0000018 Problem State

Answer 1

I wrote to the manufacturer waiting for an answer! I tried various connectors of the video card on the 2nd connector, the computer starts, but a fatal error crashes at the start of Windows. On the 3rd connector, the computer does not start. M.2 connectors in both cases, when installing Windows, the SSD does not see. And the warranty service center said that the mother is serviceable.