Many of us face a lot of problem when we have to reinstall windows on our computer or laptop. First thing we have to decide from where to install windows? The options available are DVD or USB Pendrive. In the latest new netbooks, mostly there is no DVD drive. So if you want to install windows you have to go with the other option, i.e. USB Pendrive. So here I give a brief and 100% tested tutorial on how to create a Windows 7 Bootable USB Pendrive to install Windows 7 from USB Pendrive.