I just can not turn on the EV3 with the SD card. I only turned on it twice. The EV3 stops at [-leJOS EV3] UI and does not go to the next step.
I charged the battery, reinstalled the software inside of the SD card, changed the EV3 for one time, reset the EV3, but still can not turn it on.
I could only turn on it without the SD card.
How can I fix the problem?