I had the same problem with a similar older setup. For me, it kept rolling back after the registry bypass until I finally gave up and did a clean install. Good luck!
This. Yeah, clean install is definitely the way to go. One extra tip: make sure you've got all your drivers downloaded and ready on a USB before you wipe the drive.
I had the same problem. After fighting with the upgrade for a weekend, I just backed everything up and did a clean install—it was the only thing that worked. Hope that helps.
Yeah, the clean install is a solid last resort, but before you go that far, did the PC Health Check app give you any other errors after the CPU one, like for TPM or Secure Boot?
Same here. Agreed, and if you're still stuck, try creating a fresh Windows 11 USB installer with the Media Creation Tool—it often bypasses the upgrade blocker.
+1 You could also check if your TPM is enabled in the BIOS, as that's a common trip-up. Another option is to just do a clean install from that USB instead of an upgrade.