Thanks, Ghot, for taking the time to help! Unfortunately, it didn't solve the problem. :-( In fact, even though I saved the BIOS with CSM disabled (twice), it was back on when I entered bios settings again. FYI, after the error msg, I booted to Win Login screen, then immediately choose...
I recently upgraded to Win 11 from Win 10.
Before it would upgrade I had to change the BIOS to enable Secure Boot. Now, right after booting, I get the "Secure Boot Violation" error msg (see attached). OK does take me to the Windows Login screen, and Windows does seem to run just fine, but for...