Go to iTunes Library on PC. Selec Edit>Preferences>Devices> select with Prevent iPods, iPhones, and iPads from syncing automatically. Using USB connect your iPad/iPhone with PC. Click iPad icon>select Music. Choose File> Add File to Library/ Add Folder to Library to upload your music from computer to iTunes. Click iPad icon again>music>Sync Music>Remove and Sync>Entire music library or Selected playlists, artists, albums, and genres>Apply to transfer your music from PC to iPad.