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HP Z240 POST Error 90E- Power Supply Fan Not Detected

HP Recommended
Microsoft Windows 10 (64-bit)

I have upgraded my PSU to a non-HP one and since that I am getting an POST error, 90E Power Supply Fan Not Detected.

I cannot find where to disable this in my BIOS (using the latest N51 from 20191028, I think it is 1.78).

Any help would be appreciated since this is not allowing me to boot unattended 🙂

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