Clip will not work

MP3 players Sansa Clip | Clip+
1

my sansa clip will not connect to any computer.  When I plug it in it says hardware not recognized.  I have tried resetting it and holding the center button while I connect it.  Another thing that is odd is that the screen always has the  sandisk sansa logo and none of the buttons do anything.

Please help thanks

3

I tried to install the firmware but windows popped up the message that my device was not recognized. It said my device had malfunctioned.  I am using windows vista.  I have still not seen the device in my device manager screen