Any time you install a major program like Norton System Works it is always a good idea to create an image of your hard drive before installation.I installed NSW on my daughter's laptop and it slowed the computer down to a crawl. Since I had created an image just prior to the installation, I was able to restore the drive to the state it was in before installing NSW. No more slowness!!!If there are any problems you can be back in business in about 30 minutes rather than 5-9 hours.Google drive image and take a look at the products available.