Board not working!!

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Hi there
I just receive my board two weeks ago,
The get started guide told me to use 5V D.C. to power the board
When I plug in the power to board, there's nothing happened, no HDMI display, no any light or led signal.
Even when I push the button beside the power pin or even the power pin

Is there any indicators on the broad shows that it has been powered or I have used a wrong method to power the board?

Or if the board is abnormal, is there any ways to request an rma?

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