http://kn-homecorner.i2p/blog/index.html
It took few weeks to get new motherboard bought, but now I got the computer running again. I still have to install the operating system again, but have to see when I get it done. I live in conditions, that it's almost impossible to get anything done, so it might take a while. I was running Biostar X570GT8, which was their best board for this chipset at the time I bought it.