HP ProBook 4321s Notebook-PC - Manual (Page 8)

The optical disc tray does not open for removal of a CD, DVD, or BD ............. 63
The computer does not detect the optical drive ................................................ 64
Preventing playback disruptions ....................................................................... 65
A disc does not play .......................................................................................... 65
A disc does not play automatically .................................................................... 66
A movie stops, skips, or plays erratically .......................................................... 66
A movie is not visible on an external display ..................................................... 66
The process of burning a disc does not begin, or it stops before
completion ......................................................................................................... 66
A device driver must be reinstalled ................................................................... 67
Obtaining the latest HP device drivers ............................................. 67
Obtaining Microsoft device drivers ................................................... 68
Webcam ............................................................................................................................................. 69
Webcam tips ...................................................................................................................... 69
Adjusting webcam properties ............................................................................................. 69
5 Power management ...................................................................................................................................... 71
Setting power options ......................................................................................................................... 71
Using power-saving states ................................................................................................. 71
Initiating and exiting Sleep ................................................................................ 71
Initiating and exiting Hibernation ....................................................................... 72
Using the battery meter ..................................................................................................... 72
Using power plans ............................................................................................................. 72
Viewing the current power plan ......................................................................... 73
Selecting a different power plan ........................................................................ 73
Customizing power plans .................................................................................. 73
Setting password protection on wakeup ............................................................................ 73
Using external AC power .................................................................................................................... 74
Connecting the AC adapter ............................................................................................... 74
Using battery power ........................................................................................................................... 75
Finding battery information in Help and Support ............................................................... 75
Using Battery Check .......................................................................................................... 76
Displaying the remaining battery charge ........................................................................... 76
Inserting or removing the battery ....................................................................................... 76
Charging a battery ............................................................................................................. 77
Maximizing battery discharge time .................................................................................... 78
Managing low battery levels .............................................................................................. 78
Identifying low battery levels ............................................................................. 78
Resolving a low battery level ............................................................................. 80
Resolving a low battery level when external power is available ....... 80
Resolving a low battery level when a charged battery is
available ........................................................................................... 80
Resolving a low battery level when no power source is
available ........................................................................................... 80
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