PC not logon for 14 days.

For full details see. http://social.technet.microsoft.com/Forums/en-US/configmgrsdk/thread/cf7d80a0-1a7c-430c-b33a-ee47a0efa806

select 

  CS.Name0,

  LCU.date

From 

  dbo.v_GS_COMPUTER_SYSTEM CS

  join (  Select 

        ResourceID, 

        max(LastConsoleUse0) as 'date' 

      from 

        dbo.v_GS_SYSTEM_CONSOLE_USER SCU 

      Group by 

        ResourceID) as LCU on CS.ResourceID = LCU.ResourceID

Where

  datediff(dd,LCU.date,getdate()) >14