Jenny is preparing to install Windows $10$ on a system that has a version of Windows $8\mathrm{.}1$ installed. This version of Windows $8\mathrm{.}1$ runs slowly and crashes occasionally. The optical drive also does not work, so Jenny decides to use a flash drive to install Windows $10.$ Jenny wants to remove all the programs and data from the computer and start over with Windows $10.$ What type of installation should Jenny perform?