Allan Mahoney, Try a hard reset. Hold the power button for 30 min. seconds, release the power button and give it a go. If still not functioning properly do a factory reset( all stored data/apps/etc. will be deleted). Link below will provide step by step instruction to factory reset.
Before factory reset: Purchased content through Amazon will remain linked to your account, can be re-downloaded. Other third-party e-books and apps need to be saved separate, by attaching your Kindle to your laptop by using a USB cord. You can click drag everything over to special folder in your downloads section of computer to save it. Good luck. I hope this helped you out, if so let me know by pressing the helpful button.
http://www.wikihow.com/Reset-a-Kindle