I have experienced on goings with my laptop for the past five years. I had Norton at first and then I had McAfee. But beware McAfee will take up most of your hard drive and CPU usage. Norton stupid things like bought downloads from PLAY.COM.. McAfee will not only slow your computer but will mess up your System Configuration via Startup. For all new computer I suggest using free Security. like Microsoft Office Essentials or AVG free Internet security. Which are the best Internet security.