If the Bios have ONLY UEFI (there is no Legacy option), you can boot from USB if is formatted FAT32 and not NTFS (or you can make UEFI bootable DVD/CD). Many of new PC's/laptop's have only the newer UEFI BIOS (the Legacy Bios is an older option).
Download Rufus (freeware, please use the at least the current latest version 3.8)
Make a bootable USB flash drive, formatted in FAT32 (!)
Put in the PC's, Laptop's USB port.
Power on the PC/Laptop and push the ESC (can be F8, F10, etc.. depending on the PC) until you get into the boot selection section.