So being able to power up the machine with the Enermax power supply found a bios error message of "USB overvolt" and found out the front headers on the case were broken causing the board to short out.
I'm assuming the board went into a circuit protection mode and the Enermax with the 35a on the 5v and 3v rail allowed the board to post.
Once I unplugged the USB header cable all other PSus tested fine.
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