My Sandisk sansa clip won't turn on but it will charge.

SanDisk MP3 players Sansa® Clip | Sansa® Clip+
1

My Sandisk sansa clip won’t turn on but it will charge. As soon as I unplug it turns off and it won’t turn back on it will only charge.

How do I fix it? Where is the reset button to reset it  

2

On/hold switch in the up-most position for 15-30 seconds.