Hello.  I just got my ASUS B250 Mining expert mobo and it seems DOA. I just wanted to test the POST so first I installed the Core i3 gen 7,  4g if RAM.  I connected the PSU to the 24 pin slot A and the 8 pin CPU slot.  And I plugged in the CPU fan.  I turned on the PSU and nothing, no fans spin, no video, nothing.  For a POST I expect both the PSU and CPU fans to spin and get the BIOS to display on the screen.  But nothing happens.  I tried jumping the BIOS reset and still got nothing.  I tested the PSU and it is fine.  I even tried a different PSU that is working and is used on Ant S3 and still nothing.  I created a RMA with ASUS to send it in for servicing. But before I do that I thought I would reach out and check if I am missing something, like is there a power on/off jumper I am missing or something else?  This is not my first build either but my first ASUS B250.  Please let me know if I am missing something.  Thanks much!