bootable USB Pen drive for Windows 7

Now a days ,It will be easy to access when you have windows 7 bootable USB pen drive,
 DVD may be got fast corrupted,In future ,If your DVD Writer get failed to load DVD,so you have to convenient option of bootable pen drive for windows 7 which going to easily transferable.

So, I will guide ,how to make Windows 7 bootable USB pen drive?

Minimum requirement to do so.
1)USB Pen drive of 4 GB
2)ISO Image of Windows 7 Installation disk
3)Copy ISO Image to on USB Pendrive which is done by Windows 7 USB/DVD download tool
4) Windows 7 USB/DVD download toolrequires the Microsoft .NET Framework version 2.0 or higher.

To make ISO Image
   a) You can easily make it by Nero
               Insert the the disk and start Nero.
               Now click on copy disk.
               And then when you are going to start copying disk then just change the first option from your  current CD/DVD rom to image recorder.
               then click on the copy button.
             And after few minutes you will see that you have created an image file.

b)If you have not Nero Then Download this small software to make ISO Image
       Here is the Direct download Link of
ISO Image Recorder for Windows 7 32bit -771KB
ISO Image Recorder for Windows 7 64bit -520 KB

Copy ISO Image of Windows 7 Installation Disk on USB Pendrive

                  With the Help of Windows 7 USB/DVD download tool,
 You can copy your Windows 7 ISO file onto your Computer and, run the Windows 7 USB/DVD Download Tool.
After you do this, you can install Windows 7 onto your computer directly from the USB Pen Drive.

Here is the direct download link of
Windows 7 USB/DVD Download tool--2.59 MB

a)Install the software
b)Select ISO Image FILE of  Windows 7

c)Select the option For Pen Drive"USB DEVICE" and for dvd "DVD"

d)Plug in USB Pen Drive in USB Port and click on"Begin copying"

e)NOW Wait till in 1 hour untill copying of file to pen dirve not completed.

 f)Now ,You can see Your Pen Drive become like Windows 7 bootable disk.

 At last ,Whenever you install windows 7 from USB Pen Drive

 You shold change bios setting for boot by pressing DEL buttion with the Restart of your PC

 In boot option You have to select for "Removable Disk" instead of "CD/DVD Rom" 

 and save changes

HERE is the Direct Download Link of
Download .Net Framework 4.5 --45MB