Welcome, I am Cory.
I am sorry you are having trouble with your Kindle.
Let's try a force reset.Please keep it on the charger 15 minutes. Once 15 minutes passes, please keep it on the charger and slide the power button /on switch for 40 seconds.Once you reset it, please keep it charging 15 more minutes and let me know if starts working correctly.
If you have any questions, please reply and I will assist you.
Please let me know if the Kindle is working correctly.
If it is working now, please do not forget to rate my answer.