A computer that will not boot from a CD or DVD may be able to boot from a USB flash drive. Some computers’ BIOSes have an option to choose which device to boot from.

To make a computer boot from a USB flash drive, first make sure that the computer’s BIOS is set to boot from USB devices. Second, make sure that the USB flash drive is plugged into a USB port on the computer. Third, make sure that the USB flash drive is formatted as a bootable device. Finally, copy the files needed to boot the computer from the …