Microsoft is purposely not allowing people to shut down, but instead logs them off.  They are annoying us with this inability to logoff because they want Windows 8 to feel like iOS which is always on and never shuts off.  Microsoft essentially has a lot of copycat features that Mimic Apple, like Airplane mode. You could update to Windows 8.1, I believe that shutdown issue doesn’t exist with 8.1  Or you could like me totally leave Windows all together and use the latest Ubuntu 13.04 or any other modern Linux distro.   windows 8.1 start menu