Lock Your Windows Quickly
Computer security has been a hot topic for a few years, and a good security practice is to lock your computer when you walk away from it - this prevents anyone walking by from accessing your files, emails, and other important information.
One of the quickest ways to lock your computer's screen is press the WinKey+L key (if your computer keyboard doesn't have the WinKey – the key with the Windows logo towards the lower-left of the keyboard, then you can press the Ctrl+Alt+Del keys, then Enter).
When you lock your computer's screen, you will be required to enter your log-on password to access your computer again.