If you were thinking about buying a new PC with no Internet security software you might as well not buy that PC. Seriously whether it’s Windows Vista or XP, with the default windows security software you’re going to crash before even starting up the computer. Only by combining the OS to other protection software such as Lavasoft, Norton or even Zone Alarm does your new computer stand a chance of surviving a whole year without you losing any data. If you’re like me, you’ll want to pay that additional fee on top of your new PC to keep it longer than a year.