It sounds like the only immediate solution would be to boot into Service Center DOS from the USB device, but I understand that DOS may not always have the tests you need. You may need to disable UEFI and/or Secure Boot on some newer systems, but let me know if you run into any issues.
I would also like to mention, that our new Service Center 9 USB devices have had a hardware update in order to contain all the necessary files to run Service Center. That may be worth considering in the future if you often find yourself in this situation. Contact our sales department if you would like see how much an upgrade would cost:
Contact UsPlease let me know if you have any questions or additional issues.
Thank you,
Kris