Make sure you have a Pendrive or USB drive with a minimum of 4 GB space and you have the Windows 7 installation DVD. This tutorial is best suited if you have a Windows 7 DVD with you else you need to change it Format the Pendrive or USB drive in NTFS format first.
From the start menu right click on the command prompt and select “Run as administrator“.
Now type the following commands (Press enter key after each command).
diskpart. This is to open the disk partition program.
From the start menu right click on the command prompt and select “Run as administrator“.
Now type the following commands (Press enter key after each command).
diskpart. This is to open the disk partition program.
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