I bought this blender in June 2018.  For five months it worked great and then it just stopped.  As others have mentioned the blue light comes on but nothing else happens.  I turned the blender upside down and heard a rattling noise.  I unscrewed the five screws holding the appliance together and another four screws came sliding out.  Not sure what they go to but figure it has to be important.  At least it made the rattling stop.

Not sure how to try and return this under warranty.