I am having a small problem. all of a sudden the tablet seems to keep loading, it doesn't hang it just keeps loading without ever getting to the OS. I noticed that if I press the back button the light turns of yet again the loading screen, keeps loading without hanging. I tried the suggestion to master reset it by pressing the power button for 8 seconds yet it didn't have any effect.... Any other suggestion please? To be precise my model is a Wondermedia Wanxin TX-7B.