Stop an audio CD or a DVD (fn+f10) ..................................................................21
Play previous track or section of an audio CD or a DVD (fn+f11) ......................21
Play next track or section of an audio CD or a DVD (fn+f12) .............................21
Keypads ................................................................................................................................................22
Using the embedded numeric keypad .................................................................................22
Enabling and disabling the embedded numeric keypad......................................22
Switching key functions on the embedded numeric keypad................................23
Using an external numeric keypad ......................................................................................23
Enabling or disabling num lock mode as you work .............................................23
3 Power
Power control and light locations ..........................................................................................................25
Power sources ......................................................................................................................................27
Connecting the AC adapter..................................................................................................28
Standby and hibernation........................................................................................................................29
Standby ................................................................................................................................29
Hibernation ...........................................................................................................................29
Initiating standby, hibernation or shutdown..........................................................................30
When you leave your work...................................................................................30
When a reliable power supply is unavailable ......................................................30
When using wireless communication or readable or writable media (select
models only).........................................................................................................31
Default power settings ..........................................................................................................................32
Turning the computer or display on or off ............................................................................32
Using emergency shutdown procedures .............................................................................32
Initiating or resuming from standby .....................................................................................33
Initiating or restoring from hibernation .................................................................................34
Power options .......................................................................................................................................35
Accessing Power Options Properties...................................................................................35
Displaying the Power Meter icon .........................................................................................35
Setting or changing a power scheme ..................................................................................36
Setting a security prompt .....................................................................................................36
Processor performance controls ................................................................................................
..........37
Battery packs.........................................................................................................................................38
Inserting or removing a battery pack....................................................................................38
Charging a battery pack........................................................................................................39
Monitoring the charge of the battery pack ..........................................................40
Obtaining accurate charge information ..............................................40
Displaying charge information on the screen......................................40
Viewing charge displays.....................................................40
Interpreting charge indicators.............................................40
Managing low-battery conditions .........................................................................................41
Identifying low-battery conditions.........................................................................41
Low-battery condition..........................................................................41
Critical low-battery condition ..............................................................41
Resolving low-battery conditions.........................................................................42
When external power is available.......................................................42
When a charged battery pack is available..........................................42
When no power source is available....................................................42
When the computer cannot restore from hibernation..........................42
iv ENWW