hi! I have an issue with my nano. Firstly, I try to install the jetpack on a new Sd card with more space, but it take a long for running (4 hours installing things without show me any interface) so I disconnect the nano and try with my other SD card, and now none of both start, the green light goes …

Please refer to these pages on the wiki and forums: https://elinux.org/Jetson_Nano#Power_Supplies Power supply considerations for Jetson Nano Developer Kit