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The following article outlines further suggestions for troubleshooting video playback. While you have already completed one of the steps, there are a few more that you can try:
Some customers using computers containing NVIDIA nForce Serial ATA (SATA) controllers may experience unexpected behavior when playing videos in iTunes on Windows from a SATA hard drive. iTunes may unexpectedly quit or become unresponsive or the computer may unexpectedly reboot or show a blue screen. Standard IDE hard disks are unaffected by this issue. If your computer contains a standard IDE hard disk, you can copy your video files to that disk and play those copies of the files in iTunes or QuickTime Player.