You will need to go into the BIOS of the computer and disable Secure Boot and change UEFI Boot to Legacy boot. You may see a scary message about not being able to boot. You can ignore this and Save Changes and reboot the computer with Xtra-PC. Hit the boot menu key and you should now be able to boot Xtra-PC.
Modified on: Sat, 24 Sep, 2016 at 3:07 PM
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