Differences between Sleep, Hibernation, Logging Off & Locking a Device
When a device is in Sleep mode, whether it is a computer or laptop, it is still using power. Be aware of how long it is left in Sleep if it will be used again later without the charger. Leaving a device in Sleep mode can eventually run a battery down to nothing if left in this mode long enough. How long a battery will last in sleep mode varies depending on battery capacity, time spent in Sleep mode, and battery charge when the device is put into Sleep mode.
Logging Off / Sign Off
Locking a device is most helpful when walking away from a device for a short period of time. This prevents wasted time closing and reopening programs while protecting the integrity of the data on the device by requiring a login. This is important even if only walking away for a few minutes. NOTE: Prior to Windows 10, locking is available under the Shut Down pop-out menu. In Windows 10, locking is located by clicking on the name of the user logged in at the top of the Windows button menu. Locking the display can most easily be accomplished on any Windows device by pressing the Windows + L key at the same time. For more keyboard shortcuts check out these posts: 8 Easy & Time Saving Keyboard Shortcuts AND Keyboard Shortcuts for Everyday Use.