As a new user here, thanks in advance for any help that you can give me.
I've got a KF2, running 10.4.1 (I think, or maybe 10.4.3) - it's rooted, but generally stock apart from that (no TWRP).
It was left with something playing and the battery ran down to nothing yesterday. Initially it would charge, sometimes with the red light on and sometimes not, but then it would start up and as soon as it got to the lock screen it would give a low battery noise and shut down.
After leaving it plugged in overnight it is now charged but it is getting stuck on the animated kindle fire boot logo.
If I plug it into my PC it is detected in windows and I can connect to it with ADB with no obvious errors on logcat. Easy options like clearing the dalvik cache don't fix anything (only AmazonPlatform and atlasframework get recreated in the dalvik cache before it sets into doing nothing).
Searching the forum here, there are lots of different avenues discussed for "stuck at boot logo" problems - I'd appreciate some pointers on the most sensible things to try.