restore points

Microsoft said:

The user can manually create a restore point at any time on their computer using the System Restore Wizard. Restore Points are also automatically created on your computer when:

• Installing an unsigned device driver

• Installing System Restore compliant applications (Installing an application that uses Windows Installer, or Install Shield Pro version 7.0 or later, causes System Restore to create a restore point)

• Installing an update by using Automatic Updates

• Performing a System Restore operation so the user can undo that restore operation if needed

• Restoring data from backup media using the Backup tool

• Creating daily restore points (System Restore creates a restore point every 24 hours if the computer is on or 24 hours have passed since the last restore point was created)

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Microsoft said:

System Restore also provides a space management feature to purge old restore points to make room for new ones, creating a rolling safety net. Restore points over 90 days are purged automatically by default.

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