Sometimes the range of tools you can see and use in control panel is affected by your user rights. If you are not logged into your pc as administrator or as a user with full admin rights, some key CP functions that could allow you to mess up the system through inexperience or ignorance are disabled. You might check this. Windows tries to encourage you not to use your pc routinely with full admin rights as this makes it more vulnerable to intruders and malware. Trouble is, it can be a pain in the botty just when you don't need it.
This is more often the case for pcs on corporate networks, which have a specially modified profile loaded from a central server, usually with all of the interesting stuff disabled or missing to prevent tinkering and, some cynics might say, reduce tempting distractions from your *work*!
Hope this is helpful, anyway.