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HP Presario C300 Notebook PC User Guide - Page 35

Power sources - power supply

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Power sources The computer can run on internal or external AC power. The following table indicates the best power sources for common tasks. Task Recommended power source Work in most software applications ● Charged battery pack in the computer ● External power supplied through one of the following devices: ● AC adapter ● Optional power adapter Charge or calibrate a battery pack in the computer External power supplied through ● AC adapter ● Optional power adapter Install or modify system software or write to a CD External power supplied through or DVD ● AC adapter ● Optional power adapter WARNING! Do not charge the computer battery pack on board aircraft. ENWW Power sources 29

Section	Page
Notebook Tour	7
Components	7
Top components	8
Keys	8
TouchPad	9
Buttons and switches	10
Lights	11
Display components	12
Front components	12
Rear components	13
Right-side components	14
Left-side components	15
Bottom components	16
Wireless antennae (select models only)	17
Additional hardware components	18
Labels	19
Specifications	20
Operating environment	20
Rated input power	20
TouchPad and Keyboard	21
TouchPad	21
Using the TouchPad	22
Using an external mouse	22
Setting TouchPad preferences	22
Keyboard	23
Hotkeys	23
Hotkey quick reference	24
Hotkey procedures	24
Display and clear system information (fn+esc)	24
Open the Help and Support Center (fn+f1)	25
Open the Print Options window (fn+f2)	25
Open a Web browser (fn+f3)	25
Switch the screen image (fn+f4)	26
Initiate standby (fn+f5)	26
Initiate QuickLock (fn+f6)	27
Decrease screen brightness (fn+f7)	27
Increase screen brightness (fn+f8)	27
Play, pause or resume an audio CD or a DVD (fn+f9)	27
Stop an audio CD or a DVD (fn+f10)	27
Play previous track or section of an audio CD or a DVD (fn+f11)	27
Play next track or section of an audio CD or a DVD (fn+f12)	27
Quick Launch Buttons software	28
Accessing the Quick Launch Buttons control panel	28
Setting tiling preferences	28
Setting advanced preferences	29
Displaying the Quick Launch Buttons icon	29
Setting button assignments on an external keyboard	30
Keypads	31
Using the embedded numeric keypad	31
Enabling and disabling the embedded numeric keypad	31
Switching key functions on the embedded numeric keypad	32
Using an external numeric keypad	32
Enabling or disabling num lock mode as you work	32
Power	33
Power control and light locations	33
Power sources	35
Connecting the AC adapter	36
Standby and hibernation	37
Standby	37
Hibernation	37
Initiating standby, hibernation or shutdown	38
When you leave your work	38
When a reliable power supply is unavailable	38
When using wireless communication or readable or writable media (select models only)	39
Default power settings	40
Turning the computer or display on or off	40
Using emergency shutdown procedures	40
Initiating or resuming from standby	41
Initiating or restoring from hibernation	42
Power options	43
Accessing Power Options Properties	43
Displaying the Power Meter icon	43
Setting or changing a power scheme	44
Setting a security prompt	44
Processor performance controls	45
Battery packs	46
Inserting or removing a battery pack	46
Charging a battery pack	47
Monitoring the charge of the battery pack	48
Obtaining accurate charge information	48
Displaying charge information on the screen	48
Viewing charge displays	48
Interpreting charge indicators	48
Managing low-battery conditions	49
Identifying low-battery conditions	49
Low-battery condition	49
Critical low-battery condition	49
Resolving low-battery conditions	50
When external power is available	50
When a charged battery pack is available	50
When no power source is available	50
When the computer cannot restore from hibernation	50
Calibrating a battery pack	51
When to calibrate	51
How to calibrate	51
Step 1: Charging the battery pack	51
Step 2: Discharging the battery pack	52
Step 3: Recharging the battery pack	53
Conserving battery power	53
Conserving power as you work	53
Selecting power conservation settings	54
Storing a battery pack	54
Disposing of a used battery pack	54
Drives	55
Drive care	55
IDE drive light	56
Hard drive	57
Optical drives	60
Inserting an optical disc	61
Removing an optical disc (with power)	62
Removing an optical disc (without power)	63
Avoiding standby or hibernation	64
Multimedia	65
Multimedia hardware	65
Using the optical drive	65
Identifying the installed optical drive	65
Inserting an optical disc	66
Removing an optical disc (with power)	67
Removing an optical disc (without power)	68
Using media activity hotkeys	69
Using the audio features	70
Using the audio-in (microphone) jack	70
Using the audio-out (headphone) jack	70
Adjusting the volume	71
Using the video features	72
Using the external monitor port	72
Using the S-Video-out jack	73
Multimedia software	74
Identifying preinstalled multimedia software	74
Installing multimedia software from a CD (select models only)	74
Using multimedia software	75
Protecting playback	76
Protecting the CD or DVD write process	76
Changing DVD region settings	77
Observing the copyright warning	77
External Devices	78
Using a USB device	78
Connecting a USB device	78
Stopping a USB device	79
Required USB software	79
Memory Modules	80
Adding or replacing memory modules	80
Effects of increasing memory	83