Create a Bootable USB Flash Drive For Windows 7 / Windows 8

Creating a Bootable USB Flash Drives for windows 7 / Windows 8 is very easy with WiNToBootic Application.

This application is developed to support for both the 32-bit and 64-bit versions of Windows Vista, 7 and Windows 8.

WiNToBootic application
http://goo.gl/BVZ9CX

Windows 8 Developer Preview
No longer available

Create an ISO Image File From a Windows Installation Disc

source

how to repair windows 7