Article ID: 261716
After you use the System Restore utility, some files (files that are listed on the include section of the Filelist.xml file, for example, files that have .exe, .com, .drv, .dll, or .sys as their file name extension) that were on your computer before the restore procedure may no longer be on your computer.
This behavior occurs because the following conditions are true:
To work around this behavior, run the System Restore utility again and then click Undo my last restoration.
To avoid this behavior in the future, store the files that you do not want to include in a System Restore procedure in the My Documents folder. You can move the My Documents folder to any location, but System Restore includes the new location of the My Documents folder unless you disable and then re-enable System Restore.
Important When you re-enable System Restore, all your existing restore points are removed. For additional information about how to disable and then re-enable System Restore, click the following article number to view the article in the Microsoft Knowledge Base:
264887Rename the file name extension of the files that you do not want to include in a System Restore procedure with a .sav file name extension. System Restore does not monitor files that have a .sav file name extension.
(http://support.microsoft.com/kb/264887/ )How to Enable and Disable System Restore
Article ID: 261716 - Last Review: June 19, 2014 - Revision: 4.0