Hi Raymond_Blum, usually when you correctly burn the image to the SD card according to Wiki, then connect to the motherboard, turn on the power, it will automatically start after 5-10s, when it starts, the screen will display some content, and the white LED and yellow LED on the back start flashing. At this point you can connect to it at 115200 baud rate, you can try to send it some random characters, you should get feedback. If the answer doesn’t solve your problem, please record a video and I will analyze it for you.