Help! I can't get my Diamond 923SD to work

Question

Hi all,

I have a Diamond MP3 player that I have not used for a while. After dusting it off and plugging it in my USB, it tells me that the device is not recognized.

The screen shows one of the song titles - and I had it playing for a few seconds then it stopped. None of the buttons are responding and I've moved the "hold" button and pressed all the other ones but nothing changes.

Help!