Sansa Clip+ Not turning on or being recognized when plugged into computer

In this board in the past week, there was a similar situation reported.  You might check the suggestions there.  Did you read it/try the suggestions out?  It is just a few posts below yours . . . .

http://forums.sandisk.com/t5/Sansa-Clip-Sansa-Clip/Clip-not-recognised-by-Windows-7-any-more-but-charges-it/td-p/316949