Descarca de aici si instaleaza Windows media player 11:
http://www.microsoft.com/en-us/download/windows-media-player-details.aspx
Restart.
Daca face la fel procedezi asa:
1.conectezi telefonul prin cablu
2.te duci in "control panel-system-hardware-device manager-imaging device-lumia 520", click dreapta-uninstall.(nu delete(stergi).
3 restart pc.
keytleen întreabă: