Jetson Nano will not boot

My Jetson Nano will not boot up and he fan will not run.The green led in front of the board is on. Please help me trouble shoot this.Thanks

Hi, did this happen during usage or it is a total new one? If used, it might be some hw issue which need to check the power supply, power on sequence etc., if a new one, you can try flashing sw first.

If you have a serial cable, connecting it to the UART pins next to the button header will give you more information.