Reinstall your system and your iTunes library, or just get your music, videos and photos off your iPod, and save them to your computer
1.go to music in ipod when connected to computer
2.select the songs
3.drag to the itunes area for music
Know more about how to transfer music from iPod touch to computer, which included the detailed tutorials of how to transfer your music from iPod to PC.
Hopefully this works for all of you like it just worked for me!