Ok, this is how computers operate:
Inside your computer, you will find a daemon (haha) which is used to make your computer work. Everytime you click your mouse/open an app (etc) this daemon (haha again) is pricked with white-hot needles. This causes the daemon to jump up and down and hit things with a wrench. This causes movements inside your computer, and it actually works.
When the daemon is poked with too many needles, he hits something too hard with his wrench, and something busts, causing your computer to crash.
But, you can get back at this daemon by torturing it and deleting specific things. Yeah, TAKE THAT msswchx.exe! How'd that feel mr daemon!?