Jetson nano dev kit model P3450 stop working

Hi all, unfortunately, my kit Jetson nano model P3450 stopped working suddenly. What happens in detail is that the kit starts without any particular error and I can see the ubuntu logo, the user login and the mouse arrow but once it starts all the USB ports and the ETH do not work (trying to connect the keyboard and mouse do not work). I have tried to change the power supply, to use the USB-C and the J25 standard power supply both 5V 4A and 5V 2A but nothing has changed. Do you have any suggestions to try to recover it? Is there any reset procedure or troubleshooting that I can follow to try to recover it?
thanks in advance

Please refer to Debug tips when you hit any issue (fail to boot/ keep reboot …etc) - Jetson & Embedded Systems / Jetson Nano - NVIDIA Developer Forums

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