How to install Windows 7 or Windows 8 from USB

If you want to install Windows 7 or Windows 8 from USB . you can install the windows 7 or 8 from bootable USB . if you know How to create bootable USB for windows Installation . Microsoft has given a good tool to create bootable USB form Windows 7 or Windows 8 ISO iamge.

Download the tool Windows 7 USB/DVD Download Tool from Microsoft website and create the USB bootable Fash Drive .