Search In:

How To Install and reinstall Windows 7 using USB Pen Drive

By Downloadstack Editor:

Install and reinstall Windows 7 using USB Pen Drive.


Installing Windows7 from pen drive requires Windows7 set up files, you can extract windows7 iso from Windows7 installation dvd, if you don't have any Windows7 iso you can download Official Windows7 iso here at from Operating System section.


Extract Windows7 iso using 7-Zip or WinRAR to any folder(Windows7) in your computer to get setup files.


Modern usb pen drive are bootable you can just copy all the Windows7 setup files to your pen drive and follow Installing Windows7 instructions 6 to 18 described below.



Make a quick format to clean your pen drive.


All the setup files must be copied to the pen drive from extracted folder, do not put setup files in some folder in pen drive.


If your pendrive is not bootable here are the steps to make it bootable.


Making your Pen Drive Bootable and Prepare it for installation.


For this task, you need to do a little command line.

1. Connect your Pen drive to your PC

2. Go to Command Prompt.

Start>All Programs >Accessories>Command Prompt

and Run as administrator.

Right click> Run as administrator.

3. Find the drive number for your flash drive in command prompt using these commands

list disk

The number of your Pen drive will be in the list.

4. Format the drive using the commands listed below (we'll assume your drive number was 1 in this example)

select disk 1
create partition primary
select partition 1
format fs=NTFS
assign letter=j

5. From the command prompt, browse to the folder you extracted setup files of Windows 7 ISO and then to the boot folder. If you are using Vista it should look something like

cd D:\Windows7\boot\

6. Now we will use bootsect to make the USB a bootable NTFS drive that is ready for the Windows 7 Install Files.

bootsect /nt60 j:

(assuming j is the drive letter of your Pen drive.)

Close the command prompt, the USB drive should now be bootable and ready to go.

Preparing your system for installation.


1. Start your system.


2. On system welcome (startup) screen press F2, to enter bios setup menu, for many system the key F2 is assigned to enter bios menu it can be F4, F1, and F3. You get to see at the bottom of welcome screen which key to press its mentioned there.


3. In bios menu locate boot priority tab.


4. Change boot priority to External/USB-drive in first priority by pressing F5 couple of times; if F5 doesn't work see for instruction to change priority at the bottom of screen. by default boot priority is hard disk drive in first place.


5. Save the settings and exit by pressing F10.


Installing Windows7.


6. Start your System, Insert the windows7 installation USB Pen Drive in any usb port.


7. Your system will ask you to press any key to boot from USB Pen Drive, press any key.


8. On windows installation welcome screen click install.


9. If terms and condition appears read them carefully and at the bottom of screen click check box that says i accept terms and condition. Click next.


10. A window will appear having option to either upgrade your windows or install fresh copy. Choose one appropriate to you and click next.



Choose upgrade if you want to install windows7 on windows vista or xp, or if you want to upgrade windows7 version, this upgrade option will keep all your program files and settings intact.


Choose install fresh copy to delete old operating system files and install a new fresh copy of windows7, selecting this option will delete all system files and settings.


11. If you have selected to install fresh copy of windows7, a window will appear displaying all the partition you have in your system, select the drive in which you want to install windows and click next.


Note: here you also have the option to reformat your hard drive, create new drive or delete any drive etc.


12. If you format C drive window7 will ask you to create additional 100mb drive for system, click OK.


13. Windows installation will begin now it will take some time to complete mean while your computer may restart a couple of times.


14. A window will appear to input your system name and password, enter your details, click next.


15. A Few more windows will appear to make windows7 settings your way select as you like, select your time standard when asked and click next.


16. When asked to enter key, enter your key or you can choose to enter it later and click next.


17. Windows will now prepare your desktop for first use.


You will now have installed windows7 on your system.


18. Now follow steps 1 to 4 again to change back the boot priority to hard disk drive.

AVG Internet Security 2014
AVG Internet Security 2014