windows 10 clean install download

go to the following torrent website

extratorrent and  search for  windows 10 clean install you can get the iso file burn it using refus2.2 to uyour usb and that it you can now install your new windows 10

windows 10 downloding official way

if you have a genuine licence go to microsoft website or goggle for windows media creation tool
in there you have two option avilable one to download for pendrive it is used for usb booting or download as iso  after downloading as iso  u need to burn it to cd and install your windows 10