Please plug in your Kindle for 5 minutes then hold down the power button for 45 seconds while it is plugged in until the Kindle reboots. It can take 2-3 minutes for the complete reboot process.
If that does not work then please let me know when you purchased the Kindle
If the above steps did not work then there is a hardware issue with your Kindle.
Since you are outside of the warranty period (1 year warranty) Kindle will probably not issue a replacement but they normally give great discounts for a current Amazon customer to upgrade to the Kindle Fire.
In SOME cases they will grant the 1 year warranty for a customer and give you a replacement. That is completely up to Amazon and is on a case to case basis that I have no control over.
Please call Amazon here ---> 1-***-***-****
Let them know that your Kindle has hardware issues and you need a replacement
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