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Solution
redo all the power cords, both ends, double check the PSU side is actually seated and in the correct hole.

Do you have access to a PSU tester? They are pretty cheap and can tell you if it is outputting the correct voltages. Might be a bad PSU
redo all the power cords, both ends, double check the PSU side is actually seated and in the correct hole.

Do you have access to a PSU tester? They are pretty cheap and can tell you if it is outputting the correct voltages. Might be a bad PSU
 
Solution