How to Make Windows 7 OS installation using Flash Disk?

1. Download your favorite Operating System which has .iso extension. For the example:

Due to its large size, I recommend you to use Internet Download Manager. e. g: IDM. You could search and download it using Google.

2. Download Windows7-USB-DVD-tool, you can download here:

http://download.cnet.com/Windows-7-USB-DVD-Download-Tool/3000-18513_4-10972600.html

 Then install it. 

3. Now run the Windows7-USB-DVD-tool, don't forget to plug in you Flash Disk.

4. The interface is like this.

5. Just follow the instructions!