BeagleY-AI Board Overheating and Not Detected via USB

I recently bought a Beagle AI board and I am setting it up. I flashed the image to an SD card using the imager and inserted the SD card into the board.
My main issue is that I am only connecting the board with a USB-C cable (no micro HDMI). I am using Ubuntu Linux on my PC.

The board is getting very hot — especially around the SD card area and the Ethernet area.
Also, when I flash the latest version of the image, the green LED does not blink, only the red LED blinks and then the board turns off suddenly.

If I flash the minimal version of the image, the green LED blinks, but the board is still not detected on my USB port.

Can you please help me?