Sansa Clip would not turn on

My new Sansa Clip would not turn on or charge through the USB connection.  I had loaded it with my music until it rejected my next song addition.  But I got it to turn on and charge by plugging it in to the USB port BEFORE I turned on the computer.  When I turned on the computer, it jumped to life.  It also charged and has done well since.  I hope this helps somebody else out.  I was ready to throw it away.