This is 'Windows Management Instrumentation Provider Service'.
It's set to startup automatically with windows but can dramatically slow down the boot process.
Right-click 'My Computer', select 'Manage', expand 'Services and Applications', click 'Services'.
Now in the right pane scroll down to 'Windows Management Instrumentation' (not 'driver extensions') and change from automatic to manual start (DONT DISABLE !!)
Ur'll find it starts up of it's own accord after windows has loaded.
Hope this helps !!