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Each option has its advantages. . Use the Shut Down or Hibernate command if you will not be using the computer for several days or if you must turn off your computer. You must turn off your computer in order to upgrade your computer’s internal hardware (such as memory). TECHNICAL NOTE: Before using the Shut Down option to turn off your computer, save your files and make sure all disk/disc activity lights are off. If you change your mind and decide to continue working after all, wait a few seconds before turning the computer on again. . Use the Sleep command to save your work, system settings, and current state of the desktop to memory, so that when you turn on the computer again, you will quickly and automatically return to where you left off. Hibernation mode Hibernation mode shuts the computer down completely, but it first saves the current state of the computer to hard disk. Since Hibernation mode does not require power to maintain the saved information, system settings are retained indefinitely. Factors to consider when choosing Hibernation: . While in Hibernation mode, the computer uses no main battery power. . Because the state of the system is stored to hard disk, no data is lost if the main battery discharges. . Restarting from Hibernation takes less time and consumes less main battery power than restarting after turning off the computer using the Shut down command. . Restarting from Hibernation takes a little more time and consumes more main battery power than restarting from Sleep. . When starting up again, the computer returns to the state in which you left it, including all open programs and files you were using. Getting Started 69 Turning off the computer For information on how to use and configure Hibernation mode see “Using and configuring Hibernation mode” on page 72. Sleep mode The Sleep command places the computer into a power-saving mode. Sleep saves the current state of the computer to memory so that, when you restart the computer, you can continue working from where you left off. NOTE After your computer sleeps for an extended period of time, the Windows® operating system may save any open documents and programs to your hard disk, and then shuts down the computer. Factors to consider when choosing Sleep: . While in Sleep mode, the computer uses some main battery power. . Because the state of the system is stored in memory, you will lose data if the main battery discharges while the computer is in Sleep mode. . Restarting from Sleep takes less time and consumes less main battery power than restarting after turning off the computer using the Hibernation or Shut down commands. . When starting up again, the computer returns to the mode in which you left it, including all open programs and files you were using. . If the battery charge becomes critically low, the computer will try to enter Hibernation mode. If you power down using the Sleep command and the main battery discharg...

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