I jsut changed the batteries in my new mp3 this morning and now it is powering on and off and will npot play my songs.
This is the worst mp3 player ever invented - i have to tell you this up front. There is no driver, the company does not support the product anymore - I would return it now while you still can.
Either the device is bad, the pc port is bad, or the software is faulty. Try connecting to different usb port, then a usb port on a different pc with a compatible os. If still not recognized, then there is physical damage to player.
Try this: disconnect the player from the computer, turn it off, hold in the volume + button, and reconnect the player to the computer while holding the volume + button in. Keep holding the volume + button for an additional 5-50 seconds. Windows should eventually go into recovery mode and revive the player- it will pop up a window that says Found New Hardware Wizard.
Usually answered in minutes!