Install Windows7 with USB using iso image

Installing an operating system with USB is an easy way to install an OS onto your computer.Unlike DVD,you can use USB flashdrive to make it a bootable USB which is different than copying operating system setup files to USB and run it.There are two options available-First,run that setup which will open setup dialog ,which in some cases doesn't work.Second-change the boot sequence and let the installation begin from boot by placing USB drive as 1st boot device instead of hard drive.

Making a bootable USB flash drive from iso:

You need few things to start -

1-USB flash drive

2-Windows7 iso

3-Software which convert this iso to a bootable image

Steps :

Download Windows7 iso.(if you have Windows7 DVD,convert it to bootable flash drive here)

Download Windows7 USB/DVD tool from here  and install it.

Insert USB flash drive into USB port on computer.

Run the Windows7 USB/DVD tool

Browse to select the ISO file of Windows7

Choose media type-USB drive

Begin copying

Browse to computer,click on USB flash drive to view the copied files .

     

Steps to change the boot sequence:

On completion of the first step,restart your computer.When restarting,press F2, F12 ,Esc or Del key,depends upon the manufacture of computer to enter into BIOS.By default,Laptops and computer boot from hard drive where our OS is installed,we have to change the boot sequence manner to boot it from USB which we created.

This is the boot sequence in which hard drive is selected to boot OS from.

Click on boot to change the boot order.Press down arrow >enter to view the removable devices which should be USB flash drive.Use '+' arrow to move the USB drive as 1st boot device.On some devices pressing F5 or F6 will move USB up and down.

 Press F10 to save the  configuration.

 Now,computer will boot from the USB,press any key when asked to boot from the USB.

 

Last thing to do:

When Windows7 is installing,system will restart several times and you could see that it is asking you to run setup again and again because Windows hasn't completely installed yet from the first setup.Don't run it again,close the setup,installation will continue.When installation is completed restart you computer and change the boot sequence back to hard drive.