Mtp my mp3 player say error when i turn it on and it will not let me download any songs it keeps saying error. what do i do

I downloaded music to my sony walkman NW-E003F mp3 player, but it keeps saying "NO DATA" when i go to all songs.

If you have formatted there is no music on the player. You will have to re-sync any the music. Set the USB mode to MTP, then Use Windows Media Player 10 or higher to sync player.

http://www.sansaworld.com/
http://www.sansaworldmp3.com/

sEVERAL POSSIBILITIES:
* You downloaded protected music on your Windows 98/98SE, Windows 2000, Windows XP computer using Windows Media Player 9. Music was purchased online or the music was ripped form your own audio CD with Copyright Protection turned ON.
o You must use Windows XP and Windows Media Player 10 for online purchased songs.
o You must turn OFF Copy Protection on your Windows Media Player 9 before ripping your audio CDs into WMA files
* You downloaded protected music to your MP3 player using your Windows XP computer and Windows Media Player 10 with your player in USB mode. Music was downloaded from the internet, purchased or subscribed, or it was ripped from your own audio CD with Copyright protection turned ON.
o You have to use your MW3836 in MTP mode.
-Tha Mp3 Doctor

here is the solution:
http://amritbera.blogspot.com/2008/11/mtp-problem-solved.html

on the top right of you mp3 there is a button that says M.
Try holding it then plugging it back into you computer.
O.K ill try to make this easy now, do that when its off because when it says mtp on mine i can put songs on it but idk why yours is not working so try what i said on top and good luck, because if it says usb that means you share stuff but when it says mtp that means you put on music.

Uninstall MTP Device in System --> Hardware --> Device Manager

Try this out my player did the same thing plug your player into your computer using your USB cord and for like 10min let it charge there is a small battery inside the player after 10min hold down the M button for 5sec let off then take out battery plug back into computer it should say usb and now your set

all you need to do is update the software in the mp3 go to samsung.com and then go to download center and type in the mp3 modle which is usaly found on the back of the mp3 then you click on the firmware upgrade. but if this dosnt work try to turn it on and when it gets about 80 percent loaded just put it into the computer then

I looked inside, and to my surprise (having opened other MP3 Players) there was a small watch battery that obviously powers the saving of settings.
So in the next day or two I will be changing this battery to see if it does indeed power those setting for changing thing like:
MTP -> MSC (which on Auto goes straight to MTP)
Finalizing Updates

Turn off the Mp3 off then plug it into the computer. If it doesn't work keep it on and try it that way.