After you use the Last Known Good Configuration feature to start a computer that is running Windows Vista or Windows Server 2008, some .inf files that have been serviced may be deleted from the %windir%\inf folder.
Note: These .inf files correspond to the drivers that are included with Windows.
If you try to install a new device that uses an .inf file that has been deleted, you may receive an error message that resembles the following:
Driver not found
If you try to reinstall the same version of driver that was originally serviced, the devices that use that .inf file may not work correctly.