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HP DV7T Notebook PC User Guide - Windows 7 - Page 55

Charging a battery, Maximizing battery discharge time

UPC - 797734186567

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Charging a battery WARNING! Do not charge the computer battery while on board aircraft. The battery charges whenever the computer is plugged into external power through an AC adapter, an optional power adapter, an optional expansion product, or an optional docking device. The battery charges whether the computer is off or in use, but it charges faster when the computer is off. Charging might take longer if a battery is new, has been unused for two weeks or more, or is much warmer or cooler than room temperature. To prolong battery life and optimize the accuracy of battery charge displays: ● If charging a new battery, charge it fully before turning on the computer. ● Allow the battery to discharge below five percent of a full charge through normal use before charging it. ● If the battery has been unused for one month or more, calibrate the battery instead of simply charging it. Maximizing battery discharge time Battery discharge time varies depending on the features used while on battery power. Maximum discharge time gradually shortens, as the battery storage capacity naturally degrades. To maximize battery discharge time: ● Lower the brightness on the display. ● Check the Power saver setting in Power Options. Using battery power 45

Section	Page
Features	11
Identifying hardware	11
Components	12
Top components	12
TouchPad	12
TouchPad buttons	13
Lights	14
Buttons and Fingerprint Reader (select models only)	15
Keys	16
Front components	16
Right-side components	17
Left-side components	17
Bottom components	18
Display components	19
Wireless antennas (select models only)	20
Additional hardware components	20
Labels	22
Wireless, local area network, and modem	23
Using wireless devices	23
Identifying wireless and network status icons	23
Using the wireless controls	24
Using the wireless key	24
Using HP Wireless Assistant	25
Using operating system controls	25
Using a WLAN	25
Setting up a WLAN	26
Protecting your WLAN	26
Connecting to a WLAN	27
Roaming to another network	28
Using Bluetooth wireless devices (select models only)	29
Bluetooth and Internet Connection Sharing (ICS)	29
Connecting to a local area network	30
Pointing devices and keyboard	31
Using pointing devices	31
Setting pointing device preferences	31
Using the TouchPad	31
Turning the TouchPad on and off	32
Using TouchPad gestures	32
Scrolling	32
Pinching	33
Rotating	33
Connecting an external mouse	34
Using the action keys	35
Using the hotkeys	36
Using the keypads	37
Using an integrated numeric keypad	37
Using an optional external numeric keypad	37
Cleaning the TouchPad and keyboard	38
Multimedia	39
Multimedia features	39
Identifying your multimedia components	40
Adjusting the volume	41
Using the media activity keys	41
Multimedia software	43
Using HP MediaSmart software	43
Using other preinstalled multimedia software	43
Installing multimedia software from a disc	43
Audio	44
Connecting external audio devices	44
Checking your audio functions	44
Video	45
Connecting an external monitor or projector	45
Connecting an HDMI device	45
Configuring audio for HDMI (select models only)	46
Webcam	47
Power management	48
Setting power options	48
Using power-saving states	48
Initiating and exiting Sleep	48
Initiating and exiting Hibernation	49
Using the battery meter	49
Using power plans	49
Viewing the current power plan	50
Selecting a different power plan	50
Customizing power plans	50
Setting password protection on wakeup	50
Using external AC power	51
Connecting the AC adapter	51
Using battery power	53
Finding battery information in Help and Support	53
Using Battery Check	53
Displaying the remaining battery charge	54
Inserting or removing the battery	54
Charging a battery	55
Maximizing battery discharge time	55
Managing low battery levels	56
Identifying low battery levels	56
Resolving a low battery level	56
Resolving a low battery level when external power is available	56
Resolving a low battery level when a charged battery is available	56
Resolving a low battery level when no power source is available	56
Resolving a low battery level when the computer cannot exit Hibernation	56
Calibrating a battery	57
Conserving battery power	58
Storing a battery	59
Disposing of a used battery	59
Replacing the battery	59
Switching between graphics modes (select models only)	60
Shutting down the computer	61
Drives	62
Handling drives	62
Optical drive	63
Identifying the installed optical drive	63
Using optical discs	63
Selecting the right disc (CDs, DVDs, and BDs)	64
CD-R discs	64
CD-RW discs	64
DVD±R discs	64
DVD±RW discs	64
LightScribe DVD+R discs	64
Blu-ray discs (BD)	64
Playing a CD, DVD, or BD	65
Configuring AutoPlay	66
Changing DVD region settings	66
Observing the copyright warning	66
Copying a CD or DVD	67
Creating (burning) a CD or DVD	67
Removing a CD, DVD, or BD	68
Using external drives	70
Improving hard drive performance	71
Using Disk Defragmenter	71
Using Disk Cleanup	71
Replacing a drive in the primary hard drive bay	72
Replacing a drive in the secondary hard drive bay	75
External devices	78
Using a USB device	78
Connecting a USB device	78
Removing a USB device	78
Using an eSATA device	79
Connecting an eSATA device	79
Removing an eSATA device	79
External media cards	81
Using Digital Media Slot cards	81
Inserting a digital card	81
Removing a digital card	82
Memory modules	83
Security	87
Protecting the computer	87
Using passwords	88
Setting passwords in Windows	88
Setting passwords in Setup Utility	89
Administrator password	89
Managing an administrator password	89
Entering an administrator password	90
Power-on password	90
Managing a power-on password	90
Entering a power-on password	90
Using antivirus software	91
Using firewall software	91
Installing critical security updates	92
Installing an optional security cable	92
Using the Fingerprint Reader (select models only)	93
Locating the Fingerprint Reader	93
Registering fingerprints	93
Using your registered fingerprint to log on to Windows	94
Troubleshooting	95
Cannot connect to a WLAN	95
Cannot connect to a preferred network	96
Network icon is not displayed	96
Current network security codes are unavailable	96
WLAN connection is very weak	97
Cannot connect to the wireless router	97
The optical disc tray does not open for removal of a CD, a DVD, or a BD	98
The computer does not detect the CD, DVD, or BD drive	98
A CD, DVD, or BD does not play	99
A CD, DVD, or BD does not play automatically	100
A DVD or BD movie stops, skips, or plays erratically	100
A DVD or BD movie is not visible on an external display	100
The process of burning a CD or DVD does not begin, or it stops before completion	101
A DVD or BD playing in Windows Media Player produces no sound or display	101
A device driver must be reinstalled	101
Obtaining the latest HP device drivers	102
Obtaining the latest Windows device drivers	102
Setup Utility (BIOS)	103
Starting Setup Utility	103
Using Setup Utility	104
Changing the language of Setup Utility	104
Navigating and selecting in Setup Utility	104
Displaying system information	104
Restoring default settings in Setup Utility	105
Exiting Setup Utility	105
Setup Utility menus	106
Main menu	106
Security menu	106
System Configuration menu	106
Diagnostics menu	107
Software updates	108
Updating the BIOS	109
Determining the BIOS version	109
Downloading a BIOS update	109
Updating programs and drivers	110
Backup and recovery	111
Creating recovery discs	112
Backing up your information	113
Using Windows Backup and Restore	113
Using system restore points	114
When to create restore points	114
Create a system restore point	114
Restore to a previous date and time	114
Performing a recovery	115
Recovering from the recovery discs	115
Recovering from the dedicated recovery partition (select models only)	115

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Charging a battery

WARNING!

Do not charge the computer battery while on board aircraft.

The battery charges whenever the computer is plugged into external power through an AC adapter, an

optional power adapter, an optional expansion product, or an optional docking device.

The battery charges whether the computer is off or in use, but it charges faster when the computer is

off.

Charging might take longer if a battery is new, has been unused for two weeks or more, or is much

warmer or cooler than room temperature.

To prolong battery life and optimize the accuracy of battery charge displays:

●

If charging a new battery, charge it fully before turning on the computer.

●

Allow the battery to discharge below five percent of a full charge through normal use before

charging it.

●

If the battery has been unused for one month or more, calibrate the battery instead of simply

charging it.

Maximizing battery discharge time

Battery discharge time varies depending on the features used while on battery power. Maximum

discharge time gradually shortens, as the battery storage capacity naturally degrades.

To maximize battery discharge time:

●

Lower the brightness on the display.

●

Check the Power saver setting in Power Options.

Using battery power