iPad sync issues in Windows 7

I had bought a new iPad, but I can't sync photos, music, video with iTunes in Windows 7 64bit. I got several error messages in the screen."The iPad cannot be synced. The required file cannot be found.A duplicate file name was specified.The required disk cannot be found.A folder was specified instead of a file."It seems that the iPad does not synchronize properly in Windows 7. After I updated to