If, for some reason, you find that you must turn off System Protection, this is how we do it:

1. Click Start | Control Panel | System and Maintenance | System (in Classic view, just System)
2. In the left pane, click System Protection.
3. Enter the administrator credentials or confirmation if prompted.
4. Click to uncheck the box next to the drive on which you want to turn off System Protection.
5. Click OK.

Word of Caution: Turning off System Protection will delete all restore points created for that drive. Turning it back on will not get them back!