Check iPod hard-drive for errors
Hold Select+Menu on the iPod for about 6 seconds until it resets, then hold Select+Play as soon as the Apple logo appears, again for about 6 seconds to put the machine in disk mode. Open iTunes and in the Sync tab of the preferences menu check Disable automatic syncing of all iPhones & iPods. Now connect your iPod to the computer, wait until it connects, then close iTunes. Browse My Computer and right-click on the drive for the iPod, click Properties, then click Tools. Under Error-checking, click Check Now. Under Check disk options, select Scan for and attempt recovery of bad sectors (Optional - takes ages but a good idea if you've reason to suspect physical damage). Click Start. Mac users should run Disk Utility / Repair Disk for the equivalent process. This should find and correct any errors in the logical & physical structures of your iPod's hard drive. Once these have been fixed you can reset the iPod (hold Menu+Select ) and should stand a better chance of a successful restore. It might also pay to check the status of the source drive containing your media.
And if that still doesn't help try Erase your iPod - The Super Fix for most iPod Problems. Basically a low level format of the iPod’s hard drive to get around whatever problems are stopping iTunes from restoring it.
Once you've restored your iPod don't rush to dump all the data back exactly as it was before. I have found that lots of large or complex smart playlists can sometimes trigger constant reboots or dumping of the iPod's library. In addition, larger transfers can fail leaving data in an inconsistent state. Try this technique for populating the iPod in stages.
Break up large transfers
In iTunes select the menu item File... New Smart Playlist. Change the first drop-down box to Playlist, the next to is and the next to Music. Tick against Limit to, type in say 10, then change the drop-down to GB, and set the last drop-down to artist. When you click OK you can enter a name for the playlist, e.g. Transfer. Now sync this playlist to your iPod rather than your entire library. When the sync is complete modify the rule ( File... Edit playlist ) to increase the size by your chosen amount, then sync and repeat. You can experiment with different size increments, if it doesn't work just choose something a bit smaller until it works each time. Before long you should have all your music on your iPod. Once that's done you can move on to other media such as podcasts, videos, photos, playlists etc.
Found this on post... TRY IT
im trying now
reallly hope it helps
