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#11
Don't think I mentioned it, or see it, but if the computer has both USB 2 ports [black center] and USB 3 ports [blue center] it may not boot to the USB Thumb drive if plugged into the USB 3 port. Those BIOSes support USB 2 but need to get USB 3 support from the OS when it loads. Newer combination USB 2/USB 3 ports have worked for me a couple of times booting to Linux USB Thumb drives.
Possible marking near USB ports: