As the pictures i cannot flashing the jetson nano img to my sd card successfully. when i put the sd card in my jetsonnano and connect hdmi line to the screen the screen always load the NVIDIA logo and can’t start up into system.I did download the correct img zip from the official website and the sd card is as good as fat32 32Gb，please tell me the way to solve this problem
please check Getting Started With Jetson Nano Developer Kit | NVIDIA Developer for the steps to prepare your microSD card.
you should also share your steps in details for reference,
please share all your steps for reference,
you should also check Jetson Nano - UART - JetsonHacks to gather bootloader messages.
Are you from china?
please setup serial console and gather bootloader messages for details. thanks