May Windows Updates Crash Your PC?

<center><a href="http://www.flixya.com/blog/5112410/Realizing-your-Laptop-or-computer-Technique" target="_blank"><img src="http://i50.tinypic.com/1zcjzeu.png" border="0" alt="windows updates" /></a></center> What are the difficulties that could come up once you update your Windows PC?