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User’s Manual 3-9
L450/L450D
Executing Sleep Mode
You can enter Sleep Mode in one of three ways:
■ Click Start then click the arrow ( ) in the power management button
( ) and select Sleep from the menu.
■ Close the display panel. Please note that this feature must be enabled
within the Power Options (to access it, click Start -> Control Panel ->
System and Security -> Power Options).
■ Press the power button. Please note that this feature must be enabled
within the Power Options (to access it, click Start -> Control Panel ->
System and Security -> Power Options).
When you turn the power back on, you can continue where you left when
you shut down the computer.
Sleep Mode limitations
Sleep Mode will not function under the following conditions:
■ Power is turned back on immediately after shutting down.
■ Memory circuits are exposed to static electricity or electrical noise.
Restarting the computer
Certain conditions require that you reset the computer, for example if:
■ You change certain computer settings.
■ An error occurs and the computer does not respond to your keyboard
commands.
If you need to restart the computer, there are three ways this can be
achieved:
■ Click Start then click the arrow ( ) in the power management button
( ) and select Restart from the menu.
■ Press CTRL, ALT and DEL simultaneously (once) to display the menu
window, then select Restart from the Shut down options.
■ Press the power button and hold it down for four seconds. Once the
computer has turned itself off, wait between ten and fifteen seconds
before turning the power on again by pressing the power button.
You can also enable Sleep Mode by pressing FN + F3 - please refer to
Chapter 5, The Keyboard, for further details.
■ When the computer is in Sleep Mode, the Power indicator will blink
amber.
■ If you are operating the computer on battery power, you can lengthen
the overall operating time by turning it off into Hibernation Mode - Sleep
Mode will consume more power while the computer is off.