Are you required to sign in to your computer each time you turn it on? Do you hate that? If you are not worried that someone will use your computer without your permission, there is a way to turn this 'feature' off.
Click Start > Settings > Accounts. On the left choose “Sign-in options.” Up at the top, under “Require sign-in” set the drop-down box to say Never.
Now you can turn on your PC, go get a cup of coffee, and when you return it will be ready for you to use.