Looking for Help - DCM Item to check if Computer Rebooted within 7 days

Question

Hi,
I would like to use DCM to tell me if computers have rebooted within 7 days.  I would like to audit compliance for this reboot status. 
I would like to target my Windows servers (14K of them) to tell me if they have rebooted recently.  Is there a way to do this in SCCM using DCM?
I've been looking at WQL query and think the LASTBOOTUPTime is a good place to check for the (well) last boot time.  But I am having trouble figuring out how to evaluate 7 days and use DCM to report on this for compliance.
Does anyone have any ideas...
Note: I have seen post on how to do this using hardware inventory data - but this is too slow for me as our hardware inventory SCCm client schedule is set to 2 weeks for servers.

Answer 1

Thanks for the script, we are using to see which system haven't rebooted on 35 days.
We had a few false non-compliant results based on the computer regional settings. 
I updated your script to and changed it look at days rather than hours.
strComputer = "."
 Set objWMIService = GetObject _
     ("winmgmts:\\" & strComputer & "\root\cimv2")
 Set colOperatingSystems = objWMIService.ExecQuery _
     ("Select * from Win32_OperatingSystem")
 For Each objOS in colOperatingSystems
     'dtmBootup = objOS.LastBootUpTime
     dtmLastBootupTime = WMIDateStringToDate(objOS.LastBootUpTime)
  txtLocalDateTime = WMIDateStringToDate(objOS.LocalDateTime)
     'dtmSystemUptime = DateDiff("h", dtmLastBootUpTime, Now)
  dtmSystemUptime = DateDiff ("d", dtmLastBootupTime, txtLocalDateTime)
     'Wscript.Echo "time since last reboot " & dtmSystemUptime
 Next
 Function WMIDateStringToDate(dtmBootup)
     WMIDateStringToDate = CDate(Mid(dtmBootup, 5, 2) & "/" & _
          Mid(dtmBootup, 7, 2) & "/" & Left(dtmBootup, 4) _
          & " " & Mid (dtmBootup, 9, 2) & ":" & _
          Mid(dtmBootup, 11, 2) & ":" & Mid(dtmBootup, _
          13, 2))
 End Function
 'dtmsystemuptime is hours since last reboot.  840 hours is 35 days.
 'changed to days
 if dtmSystemUptime < 35 then
 Result = "Good"
 wscript.echo Result
 Else
 Result = "Bad"
 wscript.echo Result
 End if