CAUTION: Make regular backups of your data files. System Restore does not monitor your data files or recover them.
Starting System Restore
1.Click 
.
2.In the search box, type System Restore and press <Enter>.
NOTE: The User Account Control window may appear. If you are an administrator on the computer, click Continue; otherwise, contact your administrator to continue the desired action.
3.Click Next and remaining prompts on the screen.
Restoring Your Operating System
In the event that System Restore did not resolve the issue, you may undo the last system restore.
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 
.
2.In the search box, type System Restore and press <Enter>.
3.Click Undo my last restoration and click Next.
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