Hi,
I see that your particular PC is not UEFI enabled. You can verify that by information provide in the BIOS. Version 7 is non-UEFI. If you boot into the BIOS (tap the ESC key on power up) and then tap F10 Computer Setup. Now go to Storage topics and then select Boot Order. You should be able to move the hard drive above to the top of the Legacy Device list and then save the settings.
I have seen the legacy USB option on some latops as it is a separate selectable setting.