Also, the BIOS should detect, and will most likely show you (bootable) USB drives in the boot-order menu. If they don't show up there then, again, it signifies dead USB ports -- a hardware issue -- time to take it in for repair.
Also, the BIOS should detect, and will most likely show you (bootable) USB drives in the boot-order menu. If they don't show up there then, again, it signifies dead USB ports -- a hardware issue -- time to take it in for repair.