I was advised by Chris to try something else which did solve the problem. Press and hold the power bottom for 10 seconds then press and hold it again for another 4 seconds. This really worked out with me.
I have faced the same situation after the first time charge of the tablet.. I have used the same technique of James and things went well. I believe it happened due to over charging the battery. Afterwards and up to this moment ,the tablet is working very flawlessly.