I recently purchased a non identifiable Android Tablet over the internet. Unfortunately I forgot the login password and need to factory reset the tablet (there is nothing on it so it will cause no loss). Up to now I have been unable to do so by using the Power Button and the Volume + button (as suggested by numerous websites). I also tried to get into Google after five incorrect logon attempts but was also unable to do this. Is there a special combination, different from the one I used, to Factory Reset by tablet? Any help would be appreciated.