NanoPi NEO2 net port issue and don't boot

[abgenis]

Dears,

I have a NanoPi NEO2, when i connect to energy, net port's leds (green and yellow) are on and it don't boot. This happens with or without sd card.

Any suggestion?
Thank you.

[harryginnis]

Hello, if you are using an SD card, make sure it has a valid and compatible operating system image (like Armbian or another supported OS for NanoPi).