Scott uses both Chrome and Internet Explorer on his old Dell Latitude, but I.E. is really slow. Leo says that's because the computer is older. He believes that if Scott backed up his data, formatted his hard drive, and then reinstalled the OS and updated it, he'd notice an immediate improvement in speed. Scott also noticed that his updates aren't installing. Leo says that's likely a sign that the computer's security has been breached. It's time to reformat and reinstall Windows.