So i have had an NUC7CJYH working fine with windows 10 for months. Today while working on another NUC I decided to upgrade the bois on both. I upgraded to 0046 which shows as latest. After rebooting i get the " a bootable device has not been detected". When i am in BIOS it shows up when i go to the file explorer. If I pull the drive out and install it in an external case i can view all the files on another PC so its still working. For giggles i decided to try to reinstall via DVD and the NUC sees the DVD player but will not see it as a bootable devise.
Went in and disabled secure boot as i found a few posts on this. I also backed all the way back to 0042 with the same results. The old version was a 2017 version.