EXT4 Windows is no longer on Laptop. Good riddance. Also, with only Ubuntu 24.04 installed secure boot is still greyed out. But I am not concerned about it, never used it anyway.
Gort
The original issues appear to have been resolved in this topic.
Any additional discussions about UEFI, Secure Boot, etc. should be moved over to the Lounge.
Thanks to everyone who participated in helping.