You could try this. Restore the laptop to factory settings, so that you have McCafee back then use this: Pc decrapifier. See if that does the trick.
I thought these days that you had to actually install the rubbish that comes with new PC's yourself, double clicking the exe file to enable installation. Obviously I am wrong. Being a builder do not have this problem with desktops and laptops I tend to completely wipe then fresh install Windows. Pain in the bum though getting a shiny new laptop and then have to go though this rubbish. Hope you get it sorted.