Sansa Froze. Won't come on.

Okay, so I was listening to my Sansa Fuze. (Blue one 4 gb) I turned it off and like 5 minutes later I went to turn it on. It came on and on the screen there was like a black hole thingy and colors around it. I turned it off and turned it back on. It wouldn’t even come on. I plugged it into my computer and the computer isn’t reading it. I tryed the holding the on button solution, but it doesn’t help. Any suggestions?

For 30 seconds did you hold it?