SanDisk Sansa froze on song screen, wont unfreeze

Make sure the player is fully charged. 1. Connect the player to your computer. 2. Make sure the computer detects the player.
NOTE: If needed, switch the player to MSC mode, 1. Turn device OFF. 2. Slide the Hold switch down to Lock (orange color showing). 3. Press and hold the center button while connecting the device to the PC.then connect it to the PC. Next Be sure the battery is charged 1. Leave the player connected for approximately 2 hours to charge. 2. Disconnect the player from the PC. 3. Verify if you can turn on the player. 4. Reset the player if necessary. To reset the player: 1. Press and hold the Power/Menu button for approximately 20 seconds. 2. Release the Power/Menu button. 3. Press the Power/Menu button again to turn on the player.
If that does not do it, re-seat the battery: Then try and see if it will come on with out the battery hooked to your computer, which I see you have done but did you change modes MSC to MTP . next delete the song it keeps hanging on and re-copy it back on to the player from a different folder or re-rip it from the CD and copy it into a new folder then re-copy to the player.