may somebody has experienced the same problem…
On start of PC, I have only access into BIOS, or will let it run after few seconds into BSOD „microcode revision mismatch“! After that, I am in an restarting loop.
No chance to enter Windows safe mode or make new install via USB BOOT, same error applies.
aorus 570x elite MB
According to your BSOD - Microcode revision mismatch Microsoft bug code:
If you can't enter into Windows then try flashing or updating your BIOS again or to a newer version and see if that fixes your issue.
This Windows tech site mentions several reasons to get that specific BSOD and its fixes: https://www.howto-connect.com/fix-microcode-revision-mismatch-error-0x0000017e-windows-10/
Seems like it could be a corrupt Windows OS, BIOS, or Driver issue according to the above link website.