Seriously, how many Dell or HP owners actually open up their laptops and replace RAM, increase the size of their hard drives, or replace their batteries? Sure, the computer geeks will do it because they enjoy it, but most companies automatically replace their PCs every 3 years on a lease and don't even think about interim upgrades. Most regular people get a virus and rather than spend money having the Geek Squad or local teenager rebuild their computer, they just buy another one that's newer and faster anyway.