Is it stuck on the revolving screen, or won't it boot up passed this screen. If it is you might have to reboot it or even reset it you need a tooth pick. Unplug the power cord, then place the tooth pick in the optical av slot there's a button you press in there, hold it pressed and plug the power cord back hold the tooth pick for a few secs more, you should get the recovery screen now. You can clear cache then reboot to see if that works. If that doesn't you may have to factory reset. If you go to the Home page of this forum then go to imx6 android (or imx6 MCE if its this one) and you will find more there. Good luck and hope this works for you 