Many newer PCs support a feature called Modern Standby, which allows minimal background processes to continue running during sleep mode, leading to quicker wake-up times but potentially less efficient battery preservation. PCs can operate in one of six states, with S0 indicating full operation and S5 indicating a complete shutdown. Modern Standby (S0 Low Power Idle) turns off the display and most core components while allowing limited background activity, which may vary in effectiveness for battery drain. Traditional Sleep (S3) shuts down the screen and main components but may take longer to resume. Hibernate (S4) saves the current session and powers off completely, while Restart clears memory and resets the operating system. Shut Down (S5) clears memory and terminates processes, using a "soft off" method that retains certain settings for quicker startups through fast boot. Disabling fast boot can be done via the Control Panel. Although Modern Standby can conserve battery, it may not always be effective, as issues with firmware or drivers can prevent the computer from entering a true low-power state. For maximum battery efficiency, using the Shut Down option is recommended, especially with fast boot enabled for quick startups.