To restore Windows 7 using System Restore
1. Open the Backup and Restore dialog box from the Control Panel.
2. From the Restore section, click the Recover system settings or your computer link.
3. Click Open System Restore.
4. Verify that the Recommended restore option is selected and click Next.
5. Click Finish.
6. Click Yes to conﬁrm.
Undoing System Restore
Windows 7 allows you to undo a system restore you performed previously, by selecting the Undo System Restore option in the Restore system ﬁles and settings page of the System Restore dialog box and proceed with the wizard.
———————- Thanks everyone