"Complete reinvention" means completely transforming or changing something, often from the ground up, in a way that it becomes completely different from its previous form. Full definition
From augmented and virtual reality to 3D printing and beacons, the industry seemed set for a complete reinvention at the hands of these (and other) breakthrough technologies. (retailprophet.com)
Well, a breakover, otherwise known as the «revenge body,» is a complete reinvention of oneself. (cupidspulse.com)
That band returned with a complete reinvention and produced one of the greatest albums of all time in «Achtung Baby». (metacritic.com)