Not updating the status for 7900X3D.
Not updating the status for 7900X3D.
I’d start with a fresh RAM configuration. If that fails, I’d switch the motherboard. Experienced issues with an MSI X670E Carbon WIFI for about ten days before giving up and replacing it with an ASUS Strix X670E-E. Everything worked perfectly afterward, so if you reach that stage, the same board is recommended.
Unless the supplier can test your setup by swapping components one at a time, they won’t have certainty about the problem. It seems likely they’ll suggest testing a few changes before concluding. I’m not sure, but it doesn’t look like the CPU is the problem and the motherboard plus RAM aren’t compatible.