1)Use the Windows USB/DVD download tool to get a fresh iso form Microsoft, stick it n usb or dvd, 2) boot off whatever you created before 3) Skip putting in a key for now 4) when windows asks for it, ...
To format a hard drive before you start using it in Windows, use the Disk Management utility; on a Mac, use Disk Utility.
You can format an external drive quickly and easily in Windows, without the need of any third-party tools. But before you format your USB drive, you need to consider which file system to use. File ...