Sansa c140 froze

I purchased a refurbished c140 mp3 player from on April 3, 2008.  A month ago it froze. It now shows the last song it was playing and a red low battery image.  The only way to get it to turn off is to remove the battery. A new battery takes it to the same place no matter how long I leave it unpowered.  The computer does not see it when I conect and can not find the driver if I hold down the select button when I plug it in to computer.  I have looked around this board and could not find any fix, can it be revived?  Is there any firmware update that will work?

Can you help me unfreeze it?

I thought Sandisk made quality products but I guess factory refurbished does not mean that a product will work.