Computer refuses to boot from any Windows live media?

Note: I originally posted this question on Stack Overflow, where it was marked as off-topic, and I was suggested to move to Super User.

So, I have a Dell Optiplex 760, which is currently running Ubuntu 14.04. I have been trying to install Windows 10 on my computer for days.

I have written the Windows 10 ISO (downloaded directly from the Microsoft website -- so definitely not corrupt) to a variety of media platforms: DVD, SD card, and USB flash drive. My computer refuses to boot from any Windows 10 live media I create, despite all of these devices being prioritized higher than my actual hard drive in the BIOS boot sequence settings.

Yet, when I try too boot from a live USB flash drive containing Ubuntu, it works perfectly.

If it is of any significance, my computer is currently in the AHCI boot mode, out of the following options:

• AHCI
• ATA
• Legacy

So, can anyone help me to identify and address the issue here?

Thanks in advance!

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