You've been listening to too many commercials.
Use the above-mentioned programs, learn to use msconfig to control what loads on startup, and use the programs function in the control panel to uninstall anything you didn't specifically install.
Lastly, don't use McAfee or Norton for your antivirus. They're resource heavy and filled with junk. Even John McAfee would tell you not to put his namesake on your computer. In fact, Intel just rebranded it a few weeks ago. Use Avast or Malbarebytes.