Open System Properties
Ensure that the Turn off System Restore check box is selected.
To open System Properties, click Start, click Control Panel, click Performance and Maintenance, and then click System. In the System Properties dialog box, click the System Restore tab.
If you cannot turn System Restore off, your domain administrator might have enforced administrative system Group Policy on System Restore. Contact your domain administrator.
Disk Space Issues
Allocate more disk space for archiving restore points
Turn on System Restore
Exclude a non-system drive or partition
Change System Restore settings