I formatted and flashed the microSD card, insert it it, plug the HDMI on.
After I powered the jetson nano on (the LED light on), nothing show up on my computer screen, it is not booting automatically. How shoul I fix it?
Please first try a full re-flash with SDK Manager.
Just to note, you only changed the SD card. Flash will update the QSPI memory on the Jetson itself. That contains (A) the equivalent of a BIOS, and (B) boot code. You probably only need to flash the Jetson itself once, and then a range of SD cards would work.
Also, no HDMI is never a good indication that the system did not boot. If video configuration has an error, then the system will boot correctly, but there will be no video and no matter how many times you flash it won’t work. Serial console is what you really need to debug or access a system being developed on. It is convenient that serial console can log the entire session, so it is best to start logging with that, and then boot the system. You can attach the full serial console boot log to the forum thread.
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