I can only suggest 2 things. First a very long press on the power button. If that doesn't work plug it into a running PC for 5 hours or so and try again, (that's a special trick that sometimes works). Report back the results.
Hi SParker, congratulations on your new KLU tablet and welcome to the forum. Nice to have you as a member of Android Tablets. By all means try what Lee suggested, it often works. I'm also moving your thread to the Android Tablet Q&A section for you, where more people are likely to join the discussion and try to help you. Good luck!