What code have you written and how does it fail for you?

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I know it very well Corion. But i guess its for helping atleast. Well anyway, Me with my friend were able to write script upto checking up service status using below code:

#Script to list all of the currently running services using WMI query
use Win32::OLE;
use Win32::OLE  'in';
use Win32::OLE::Const;

use constant wbemFlagReturnImmediately => 0x10;
use constant wbemFlagForwardOnly => 0x20;

my @servicestate = ("Stopped","Started");
my $computer = "localhost";  # can be set to point to other computers.
+..

my $wmiObj = Win32::OLE->GetObject("winmgmts:\\\\$computer\\root\\CIMV
+2")
 or die "WMI connection failed.\n";

#List all services...
#my $servSet = $wmiObj->ExecQuery("SELECT * FROM Win32_Service", "WQL"
+,
#       wbemFlagReturnImmediately | wbemFlagForwardOnly);

#Get only running services
my $servSet = $wmiObj->ExecQuery("SELECT * FROM Win32_Service WHERE st
+arted = 1", "WQL",
       wbemFlagReturnImmediately | wbemFlagForwardOnly);

foreach my $serv (in $servSet) {
     my $sname = $serv->{name};
     my $sstate = $serv->{started};
     my $ssmode = $serv->{startmode};
     print "Service: "
             . $sname . " - "
         . $servicestate[$sstate] . " - "
         . $ssmode 
         . "\n";
 }
[download]

How does this code relate to the problem at hand?

But as you're already using WMI, you can just use the service objects to start/stop the service. Just call ->StartService or ->StopService on the service respectively.