Windows 7 has outstanding security features, better compatibility with devices and also a better graphical user interface. Also, Windows 7 gives support for touch screens and better combination the Windows Media Center for a get better entertainment experience. If you have an older version of Windows, you can upgrade to Windows 7 and just keep all of your files.

a. Make sure that your PC has the basic software and hardware compatible with Windows 7. Windows offers a free utility tool, Microsoft Upgrade Advisor, to help you find out if your PC currently has all the requirements.

b. Take back up of all important files before you make any major changes to your PC.

c. Run the Windows 7 Upgrade software. Then Click "install now" then select "Custom Installation"

d. Save the files you previously back up data in tour new operating system.