Have you tried flashing the x86_64.iso or x86_64-nonfree.iso file, as outlined in the DIY x86 Flashing Guide?
Usually these issues you are running into are caused by not having the correct firmware for your hardware.
In rare cases with very new hardware it might need firmware that is not yet available.
Take a look at the Known Good Hardware Master List to see if any other community member has been successful at flashing StartOS on that particular hardware.
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