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Pressing the power button (if enabled in power settings).
Pressing the suspend function key <Fn> + <F4>.
Power Button Settings
The function of the power button can be set to Shutdown or Standby in the
Power Options Properties dialog box. However, holding the power button down
for more than four seconds will force a power off while operating under any
situation, resulting in the loss of any unsaved information.
Power Saving Tips
Avoid operating the fax/modem, or audio and video applications
when using battery power. Operating a fax modem, video, or audio
equipment increases the computer's power requirements.
Decreasing monitor brightness can also save power. Decrease
brightness by pushing <Fn> + <F6>. Increase it by pushing <Fn> +
<F7>.
Power Management — Chapter 4
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