HiHello
Here's the official version from MS:
Quote:
About System Restore
System Restore monitors system changes and saves the system state as a restore point. If a system problem develops as a result of a system change, the user can return the system to a previous state using the data from a restore point.
Applications and the system can create restore points when system changes occur. System Restore also creates checkpoints every 24 hours of absolute time. It can also be configured to create restore points at regular intervals. In addition, users can create restore points at any time.
System Restore does not restore user data or documents, so it will not cause users to lose their files, e-mail, browsing history, or favorites. System Restore is also made available to users in safe mode, making it easier for them to restore their computers to a state before problems occurred.
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When "System Restore" is on your PC, at regular intervals, saves your system. If you have a problem, like an installation has mucked up your PC, you can access the SR facility and go back to a date before the problem occured.
It is a very useful facility and, in all honesty, should always be on.
UK Bob