Computers will get slower in time, and work will be increasingly frustrating and annoying as the PC's speed can prevent you from being able to do various things, like playing games, browsing the web or watching movies. This phenomenon of "PC slowdown" affects basically every computer - but it can easily be solved.All Windows based computers basically run in the same way, and they all suffer from this problem, some sooner, some later. The main cause why your PC is running slower than it's supposed to be is a part of your PC called registry. The registry is a big database, and it plays a central role in how your computer stores and access program related data. The registry stores data of all kind, data belonging to your latest game, your word processor or your screen savers.