The inbuilt partition which I presume You refer to is a recovery partition on the harddrive/ssd and therefore it will reset everything from when You bought it - including every bloatware that is in included.
Instead You can download and run this free s/w: PC Decrapifier
It is a free tool and no commercials or what so ever. There are however a more professional tool that cost. The free version is just as good.
Best regards from Sweden