The precise text in the dialog is: Headline: Windows Media Player 10 Text: System Restore is turned off. If you continue Setup, you will be unable to use System Restore to restore the version of Windows Media Player that was included with the Windows operating system that your computer is running. It is recommended that you click Cancel, turn on System Restore, and then upgrade to Windows Media Player 10. For more information about System Restore, see Help and Support. Do you want to continue? Buttons: OK / Cancel