Hi,
This same thing happened to my irulu. What I did was I left the tablet turned on until the battery ran completely out. I then charged up the tablet and it is now working just fine. Sometimes a simple solution is all that is needed. I figure that somehow the initialing files of the irulu have gotten corrupted. Once you let it completely run out of charge, it forces it to reset or remake those initial files. Try it and see if this solution works for you.