I can't shutdown my laptop
Hold the power button down for about five or six seconds, it will shut down then. If it keeps doing this, you need to look at what is running in the background that is preventing you from shutting down via the menu.
type in msconfig
take a look at what is scheduled to load at startup and then try to decide if you really need to have that application on all of the time. BE CAREFUL. If you don't recognize an entry, leave it alone until you can learn what it is.