Copying out of MS products always seems to leave junk behind. The worst one is the zero-width space (unicode U+200B or hex e2808b) . Sharepoint loves to scatter these all over so any copy from a sharepoint source has to be put in a plain text editor and have a run through with a regex to find any invisible formatting characters.
The i7-7700k is my exact CPU, and I was wondering why my update screen always claimed I was out of spec for Win 11. Then I did some digging and it seems that some CPUs are more equal than others in that regard. Then I got Win 11 on my work computer and didn't want Win 11 anymore.