Welcome, I am Cory.
I am sorry you are having trouble with your Kindle.
Please unplug the Kindle if it is charging.
Once unplugged, please press in and hold the power button/on switch for 40 seconds to reset it. If this does not fix it the first time, please try it 3 additional times.
Please let me know the outcome.
Please let me know if this helped you or if we need to troubleshoot further.