HELP Dell Precision w i5-750 T1500 / Lynnwood n - stuck at exitbs, getting Err(0xE) <- RT.GV boot-signature

here's a copy of the log.

i'm using opencore

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https://preview.redd.it/qnbiugqp5x8c1.png?width=1598&format=png&auto=webp&s=406182e20f84a50008939391ea12cd957daa9a5a

https://www.dropbox.com/scl/fi/0i3g2dxqlt88uaov1zx5c/opencore-2023-12-27-225313.txt?rlkey=uukhc39hjeh46py52hciz31e6&dl=0

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tried installing monterrey and it freezes after selecting the OS from the picker

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with the errors shown in log