Reinstall Operating System


  • Before going to proceed with this text you should remember that every operating system has its own credentials to be installed.
  • Windows of different versions takes different amount of time and deliverers different general and graphical textures to the user to operate.
  • But as a whole the process of reinstalling is complicated, time consuming and can erase or over-write the entire hard disc.


  • So the reinstalling should be done very cautiously and preferable a person who has the knowledge should be consulted for it.
  • Before starting the process you have to be sure that every file and folders, which may be needed later on, present in “My Documents”, “My Favorites”, “My Pictures”, on the desktop etc should have a back up file.
  • This can be done by writing it in CD or keeping it in a pen-drive etc.
  • For ease in reinstallation make partition of the hard drive and use on of them for the operating system.
  • So before attempting a reinstallation keep all the data in other partition and avoid loosing them. For the installed applications keep the original CDs with the .exe file for the application before reinstalling.
  • Also keep the CDs those were given to you during purchasing the computer.
  • At first disconnect the Ethernet network from the computer, and for laptops having an internal wireless network capacity, put the wireless card out of action.
  • If possible remove the wireless card it from the computer, if it can be easily removed, before going on with the reinstallation.
  • Do not hesitate to call for support with this process, if required.
  • Now proceed to the reinstallation process.
  • To start for reinstalling the first step is to put the CD of the operating system in the CD drive and restarting the computer.
  • The computer gets boot from the CD and begins the Windows reinstall procedure.
  • If the computer gets booted from the hard drive, reboot the computer and use the [F12] key to enter the BIOS setup while the computer proceeds through the preliminary stages of restarting.
  • A list of drives by which the computer can be booted is seen. Selection of the CD/DVD drive should be made here.
  • There will then be a prompt to confirm that you wish to start from the CD/DVD drive.
  • Reinstalling Windows i.e. installing it on an already-existing Windows may take much time.
  • The computer gives prompt to agree to the license agreement.


  • Then the type of installation you would like is asked. There are three options,
  • To repair Windows XP already installed
  • Re-install the Windows
  • And to quit the installation process

Main Measures

  • If to repair the installed Windows is chosen, most programs and the user profiles will work after the finish of this repair. During the reinstallation process, it may ask for options to overwriting existing files.
  • If to re-install Windows is chosen, it is recommended not deleting the drive partitions that are present. Because doing so may erase everything from the hard drive.
  • This can only be done if you have all the backups for each and every file and folder that may be required later on.
  • Partitioning your hard drive will also remove all software and personal files.
  • Again, do this only if you are prepared to reinstall all your software and restore your personal documents from a backup.
  • But it is a fact that reformatting the hard drive is the solitary way to get rid of computer Trojans, spy wares, worms, or viruses and also detecting the bad sectors that may be present in the computer after working for a long time.
  • During the time of installation the computer asks for many options.
  • Just put the right options and proceed. Windows takes care of the re-installation and will guide you to the destiny automatically.
  • Once the reinstallation the operating system is over, installation of the hardware drivers like the Graphics Card, the Wireless Connection, the Ethernet card, or the additional output and input devices may be required.
  • The software to be used generally comes while purchasing the components.
  • If by any chance they are lost, they can download from manufacturer’s the Web site for the specific component.
  • Before reconnect the internet or LAN connections, all the critical updates of the Windows should be downloaded.
  • Recent updated Antivirus and Firewalls should be installed also, so as to protect the computer from viruses, spy ware, Trojans, or other worms.
  • Computers having Windows operating system are often attacked prior to the finish of starting up process.
  • For additional information, visit the Safe Computing at Dartmouth Web page and open the page of the Threats.
  • Windows XP Service Pack 2 (SP2) has got an inbuilt firewall.
  • So it is easy to reinstall SP2. But for normal XP or other versions it is recommended to use a firewall, for e.g. Sygate Firewall before using the internet or LAN.
  • If you have the original XP you can have the privilege to download the SP2, but for this also use other firewall as you will need to use the internet.
  • The firewall and the antivirus should be updated daily.
  • After installing all the updates of the operating system and after updating all the installed applications, it is secure connect the computer with internet or LAN or other networking.