NUC can't recognize bootable usb thumb drive when boot (NUC7PJYH)

[xxx (Banned - toxicity)]

I can’t directly help, but I think you are going to be asked what generation your NUC is.

If it’s GEN10, did you see this?

New NUC install won't boot

Not being able to find a boot disk caused me a lot of hair-pulling, as apparently it has for others: I just got my NUC10i7FNH configured and my problem was getting it to see my 2.5" SSD as a boot option. After doing all the other things per the installation guide (Legacy Boot, etc.), the trick that eventually allowed me to proceed was turning off Secure Boot in the Boot section of the BIOS, which on the 10th Gen. NUC is (at least on mine) the Aptio-V BIOS. Other issues were typical hassles that…