Re-installation or formatting the system in Win-7 require more attention. If your system is not getting boot with the previous OS and you believe the format is only the option, Please visit computer repair before you can perform this task at home without anybody’s help. The initial thing you need is bootable Windows 7 disk. Select the DVD drive as first boot device in your bios. Boot the system with the disk and wait for setup wizard. Once you start your computer with the bootable disk, you will get instruction window. The first box appear will be language. Select your desired language and press the next button. Later a box will appear where you have to select the Custom option. Click on Drive options shown below and click partition you want to format. Follow displayed instructions and once the formatting is done, click on next button. Now the message appears will guide about the Win-7 installation. Installation of Win-7 is simple compared to other OS from Microsoft. Simply press next button and within 30 to 40 minutes your OS will be installed. However, PC naming, allocation of IP address and admin password features will be done later once the OS is installed. The most important part of the formatting is if you have data in other drives on your system and you are not aware of volume size then you might face difficulty at the time of formatting. You can get confused which drive you want to format. Note the size of the volume and select the appropriate drive at time of format. Create new user with limited rights so that you will not be able to install unnecessary software’s in your machine. Experts suggest the easiest way to protect a system from any harm is not installed unwanted software or application on the system....