I can't turn o my digital mp3 player

you have to open it and see if your batery isn t burnd

If the MP3 player is not charging through the USB cable when connected to the computer and the computer cannot detect the MPe player then you could have a faulty USB cable. Try a different USB cable.

No, text messaging usually isn't a feature available on mp3 players.

Try this guys tips -- First one -Sansa Mp3 player frozen? How to reset and...
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Then this one -Solve your MP3 Player Connection Problem.

Ensure the key lock is not activated by sliding
"Power on/off ( )/Hold" towards the center
position. If your player isn’t already on, turn it on by
sliding "Power on/off ( )/Hold" to the left
and holding until the player turns on.

-Tha Mp3 Doctor

try charging it for 2-3 hours and then try if not working after that maybe the swich is not working

Ensure the key lock is not activated by sliding
"Power on/off ( )/Hold" towards the center
position. If your player isn’t already on, turn it on by
sliding "Power on/off ( )/Hold" to the left
and holding until the player turns on.

-Tha Mp3 Doctor

Ensure the key lock is not activated by sliding
"Power on/off ( )/Hold" towards the center
position. If your player isn’t already on, turn it on by
sliding "Power on/off ( )/Hold" to the left
and holding until the player turns on.

You can also try resetting the player by removing/reinserting (or changing) the battery.

-Tha Mp3 Doctor

Ensure the key lock is not activated by sliding
"Power on/off ( )/Hold" towards the center
position.If your player isn’t already on, turn it on by
sliding "Power on/off ( )/Hold" to the left
and holding until the player turns on.

If this does not work, reset the player by removing/reinserting the battery.

You have probably turned on the sleep timer.This function sets a time delay to automatically power OFF regardless of playback status.In the SETTINGS menu, use <<and>> to select “Sleep Timer” then press Z and then press the play/pause button.Then use the + or - keys to highlight disable and then press the play pause button again. Let me know if it worked.
Sai.