The green button of my jetson nano does not light up

Hello,
the green button of my jetson nano does not light up when I plug in the power jack (J25) with the help of my 5V DZS Elec LM2596 DC-DC Buck Converter [https://www.amazon.com/gp/product/B06XRDV49T].
The first startup it worked but the next day it no longer works because the nano’s bonton does not turn on.
I would like to know what is the problem please because I know that the sd card is well formatted and loaded (because working the first day but not anymore) and how I can do to turn on again and work (the led button green lights up) to continue my work ???
I also made the direct connection with the micro usb (5V 2A) but still nothing.

945-13450-0000-000
S / N: 1422619056318

thank you in advance

Hi @Cristopher12,

This is the wrong forum for these kinds of questions. You probably should look at posting on the Jetson Nano forum: https://forums.developer.nvidia.com/c/agx-autonomous-machines/jetson-embedded-systems/jetson-nano/76

Take care,
-Gav