Enough cannot be said about the importance of doing a fresh, full and clean installation of Windows 7 on your computer if it has never been done in the past. New computers contain vast amounts of bloatware (trial programs, manufacture specific utilities and freeware), as well as specific settings that will slow your computer in order to ensure the stability of the system for the needs of the manufacturer. Many times newer systems contain programs that the consumer believes are vital yet utilize a vast amount of system resources to do their job. This slows your computer.