You should connect it to ur pc..... give some time so that it can chrge..... then press the volume key for a while........ ur tab will get connected to ur pc......... then try to go home page by clicking back button........ you may get a screen to reset ur tab...... reset n let it shut down.... tab may not start even den...... do the same procedure again... n dis tine wen u press back button u will get the home screen..... ur all data may be lost.... but ur tab will start working