Microsoft Windows 10 Pro build 2004 (10.0.19401)
I cannot boot from USB. The only option I get is booting from Windows. I cannot turn off UEFI boot and have no option to enable Legacy boot.
Secure boot is not checked
USB and Optical devices are checked
Boot USB first is checked
I have tried Rufus and free dos to create the bootable drive. Formatted FAT32 on USB 3; USB 2 and even a 15 year old USB 1.1.
I have added USB in the back and in the front but never see anything other than the windows disk as an option to boot from.
It is a working system that I cannot rebuild at the moment and is otherwise working pretty well.
I do not know what else to try. It should be a simple thing to boot from USB.