Console crashes

I've suffered a few complete crashes over the last few months.

Firstly I've had the console completely lock up, current output is maintained but nothing responds and the only way out is to reboot. Happened on a Hog 4 running 2.3.0

The other type is where I lose all the play buttons. Back buttons still work. If I hit any choose buttons I end up with multiple playbacks chosen with flashing blue LEDs but I can't play or release. Again the only way out is to reboot. I've seen this on a Hog 4 with both v2.1.0 and 2.3.0.

I don't know what caused either and I can't reproduce them. They've happened on different show files, and always mid show so it's been a mad scramble to recover.
Sorry, not my consoles so no log files either.