Problem with crowpi2 power
So just got this crowpi2 kit from amazon yesterday, yet I have been really frustrated with the power of this thing. Tried both the dc and the usb power but what happened most of the time is just if I keep my finger on the power button the screen does lit up with the logo but nothing happens and when Iet go it blackouts. A few times it did boot up and worked normally for maybe 10mins and then blackouts and returned to the stage I previouslt described. One of my powerbank seemed burnt out already by the way. Can anyone offer some help please?