One of the new features of Windows Server 2008 R2 is the Active Directory Recycle Bin. We can now “restore” a user account that has been deleted. However, this requires a functional Windows Server 2008R2 level.
It is necessary to enter a few command lines. However, you can still use PowerGui for the search and restore part of deleted AD accounts.
Download the document (click on the link – PDF file) : Restore account