Undoing the Last System Restore
NOTE: Before you undo the last system restore, save and close all open files and exit any open programs. Do not alter, open, or delete any files or programs until the system restoration is complete.
1.Click Start 
.
2.In the search box, type System Restore and press <Enter>.
3.Click Undo my last restoration and click Next.
Restoring Your Operating System
Dell DataSafe Local Backup
CAUTION: Using Dell DataSafe Local Backup to restore your operating system permanently removes any programs
or drivers installed after you received your computer. Create backup media of applications you need to install on your computer before using Dell DataSafe Local Backup. Use Dell DataSafe Local Backup only if System Restore did not resolve your operating system problem.
CAUTION: Although Dell DataSafe Local Backup is designed to preserve the data files on your computer, it is recommended that you backup your data files before using the Dell DataSafe Local Backup.
NOTE: Dell DataSafe Local Backup may not be available in all regions.
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