Try connecting your Clip Sport to a powered USB port on your computer. Or connect it to a 1.0 amp USB charging block.
->Use the micro USB cable that came with your player.
Then press down on the large oval shaped button below the display screen for at least 20 secs.
After the player starts up, allow it to charge for at least 3 hrs.
You may want to review all the helpful information about your player in the Clip Sport section of this SanDisk user forum.
http://forums.sandisk.com/t5/SanDisk-Clip-Sport/bd-p/clipsport
