Hello. I recently purchased this PC for my home office, and part of my work requires building a secure desktop by booting it from a flash drive. However, the PC refuses to recognize the flash drive. With what limited knowledge I have, I've checked the BIOS settings and disabled secure boot. Still not working. What is another resolution to this? I'm terribly frustrated and ready to send this machine back if it can't do something so simple as booting from a flash drive.