"Sleep" is an energy-saving state that enables the computer to quickly restore full power when you need a computer to restart its work. Keeping your computer in sleep is like pausing the player, the computer stops working immediately, and is ready to continue working.
Hibernation is a power-saving state that is designed primarily for portable computers. Sleep typically saves work and settings in memory and consumes a small amount of power, while hibernation saves open documents and programs to your hard disk, and then shuts down your computer. In all energy-saving states used by Windows, hibernation uses the least amount of electricity. For laptops, you should use Hibernate mode if you know that you will not use it for a long time, and you cannot charge the battery during that time.
There is also a "mixed sleep" designed for desktop computers. As the name suggests, mixed sleep is a combination of sleep and hibernation-it saves all open documents and programs to memory and hard drives, and then lets the computer enter a low-power state so that it can quickly resume work. If a power failure occurs, Windows can recover your work from the hard disk. If you turn on a mixed sleep, the computer goes to sleep, and it automatically goes into a mixed sleep state. On a desktop computer, mixed sleep is usually turned on by default.