EV3 screen stuck at starting after inserting MicroSD card I followed the official guide to download microPython and flash it onto an empty MicroSD card (SanDisk Extreme Pro 32GB), but the EV3 screen is now stuck at "Starting" after I insert the MicroSD card. The EV3 works fine without a MicroSD card.
This could be due to a bad SD card or due to bad flashing software. For example, there was a broken version of the Etcher software in early 2019 that caused the same symptoms [1].