Hi, I vaguely remember having been in this situation and having pulled the SD card out and read the boot.log file. And having found useful information there about a HW error I had, which caused it (bad compass wires in my case).
I also remember that you can get a live boot log on the UART4/5 port. This requires that you know how to build a get a serial cable and how to read the incoming data in a terminal program (it sounds more difficult than it is).
Hi Guerrilla Drone,
I have the same problem. Have you found the way how to solve it?