We appreciate and totally rely on the artificial intelligence of computer. We bog it down with too much work and keep on pressurizing it till a time when it gets locked up or just freezes. Of course we have to tolerate the consequences and find out a way to make the locked computer work again. There are different issues which affect a computer. To understand why a computer gets locked up all of a sudden you need to understand how it works. You get a brand new PC installed with the latest Windows OS. Then you start downloading hundreds of files and keep on installing different software.