I'm not sure if you have abandoned this question per no replies featured above but here should be a solution to your issue.
Go to Run, Type in: services.msc
From there you can manage the services on your local machine - if you are an admin.
Scroll down to Windows Search. If the service is off, Start it. Then right click on that Windows Search and click properties. In the general tab, view where it says startup type. Change it to either Automatic or Automatic (Delayed Start).
Hit Apply, Then Okay.
Close Services and restart the machine.
If this does not resolve your issue, you might be under a different classification than Administrator - which usually is managed by your Admin. You may be under specific policies he/she put in place. (To view your rights, within the start menu - Right click on My computer, and go to Manage. Then click on Local Users and Groups on the left side. Here you will be able to view the total users who can login under Users. Find your login, right click on it, and go to properties. Then click on the 'Member Of' tab to view what you are classified as)
Hope this helps.