HP 421 Notebook-PC - Manual (Page 8)

Obtaining the latest HP device drivers ............................................. 54
Obtaining Microsoft device drivers ................................................... 55
Webcam ............................................................................................................................................. 56
Adjusting webcam properties ............................................................................................. 56
5 Power management ...................................................................................................................................... 58
Setting power options ......................................................................................................................... 58
Using power-saving states ................................................................................................. 58
Initiating and exiting Sleep ................................................................................ 58
Initiating and exiting Hibernation ....................................................................... 59
Using the battery meter ..................................................................................................... 59
Using power plans ............................................................................................................. 59
Viewing the current power plan ......................................................................... 60
Selecting a different power plan ........................................................................ 60
Customizing power plans .................................................................................. 60
Setting password protection on wakeup ............................................................................ 60
Using external AC power .................................................................................................................... 60
Connecting the AC adapter ............................................................................................... 61
Using battery power ........................................................................................................................... 62
Using Battery Check .......................................................................................................... 62
Displaying the remaining battery charge ........................................................................... 63
Inserting or removing the battery ....................................................................................... 63
Charging a battery ............................................................................................................. 65
Maximizing battery discharge time .................................................................................... 65
Managing low battery levels .............................................................................................. 65
Identifying low battery levels ............................................................................. 66
Resolving a low battery level ............................................................................. 66
Resolving a low battery level when external power is available ....... 66
Resolving a low battery level when a charged battery is
available ........................................................................................... 66
Resolving a low battery level when no power source is available .... 66
Resolving a low battery level when the computer cannot exit
Hibernation ....................................................................................... 66
Calibrating a battery ........................................................................................................... 67
Step 1: Fully charge the battery ........................................................................ 67
Step 2: Disable Hibernation and Sleep ............................................................. 67
Step 3: Discharge the battery ............................................................................ 68
Step 4: Fully recharge the battery ..................................................................... 69
Step 5: Reenable Hibernation and Sleep .......................................................... 69
Conserving battery power .................................................................................................. 69
Storing a battery ................................................................................................................ 69
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