How to fix my kindle that keeps rebooting?

My kindle has been rebooting itself for 12 hours.

I tried everything, keep it charged, press the button for 40 seconds.

I also plug it in to my usb but no usb drive appeared.

Here is how my kindle looks like - rebooting itself for 12 hours.

https://streamable.com/f53af

Does anybody know how to fix this problem?

Best Regards,