Connecting the AC adapter | HP dv4-2160us guide

Connecting the AC adapter

WARNING! To reduce the risk of electric shock or damage to the equipment:

Plug the power cord into an AC outlet that is easily accessible at all times.

Disconnect power from the computer by unplugging the power cord from the AC outlet (not by unplugging the power cord from the computer).

If provided with a 3-pin attachment plug on the power cord, plug the cord into a grounded (earthed) 3- pin outlet. Do not disable the power cord grounding pin, for example, by attaching a 2-pin adapter. The grounding pin is an important safety feature.

To connect the computer to external AC power:

1.Plug the AC adapter into the power connector (1) on the computer.

2.Plug the power cord into the AC adapter (2).

3.Plug the other end of the power cord into an AC outlet (3).

82 Chapter 8 Power management

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HP dv4-2160us manual Connecting the AC adapter

Contents

Page Product notice Safety warning notice Iv Safety warning notice Table of contents Pointing devices and keyboard Multimedia HP Media Remote Control Select Models Only Drives External media cards 149 Xii Using HP QuickWeb select models only Starting HP QuickWeb Disabling and enabling HP QuickWeb Features Identifying hardware Top components ComponentsTouchPad Lights Components Features Panel System and Security Power Options Buttons, speakers, and fingerprint reader Keys Fn key Display Front components Rear component Right-side components Left-side components Bottom components Wireless antennas Additional hardware components Labels Wireless, local area network, and modem Using wireless devices Identifying wireless and network status icons Using the wireless controls Using the wireless button Using HP Wireless Assistant Using HP Connection Manager select models only Using operating system controls Using a Wlan Setting up a Wlan Use a wireless transmitter with built-in security Protecting your Wlan Connecting to a Wlan Roaming to another network Using HP Mobile Broadband select models only Inserting a SIM Removing a SIM Using Bluetooth wireless devices select models only Bluetooth and Internet Connection Sharing ICS Troubleshooting wireless connection problems Cannot connect to a Wlan Network icon is not displayed Cannot connect to a preferred networkCurrent network security codes are unavailable Cannot connect to the wireless router Wlan connection is very weak Using the modem select models only Connecting a modem cable Selecting a location setting Connecting a country-specific modem cable adapterViewing the current location selection Adding new locations when traveling Select Start Devices and Printers Solving travel connection problems Check the telephone line type Connecting to a local area network Using the TouchPad Pointing devices and keyboard Setting TouchPad preferences Connecting an external mouse Using keyboard hotkeys Function Hotkey Displaying system information Opening Help and Support Opening the Print Options window Switching the screen imageOpening a Web browser Decreasing screen brightness Initiating SleepInitiating QuickLock Increasing screen brightness Playing previous track or section of an audio CD or a DVD Playing, pausing or resuming an audio CD or a DVDStopping an audio CD or a DVD Playing next track or section of an audio CD or a DVD Using keypads Num lk key Switching key functions on the embedded numeric keypad Using the embedded numeric keypadUsing an optional external numeric keypad Enabling and disabling the embedded numeric keypad Cleaning the TouchPad and keyboard Multimedia features Multimedia Identifying your multimedia components Environmental Notices Using the MediaSmart button select models only Adjusting the volume Using the media activity hotkeys Installing multimedia software from a disc Using HP MediaSmart softwareUsing other preinstalled multimedia software Multimedia software Audio Connecting external audio devicesChecking your audio functions Connecting an external monitor or projector Video Connecting an Hdmi device Configuring audio for Hdmi Watching TV select models only Webcam Troubleshooting Computer does not detect the optical drive Disc does not play Disc does not play automatically DVD movie stops, skips, or plays erratically DVD movie is not visible on an external display Remove any discs from the optical drive Obtaining the latest HP device drivers Obtaining the latest Windows device drivers HP Mobile Remote Control Select Models Only Component functions Button quick reference Button Function Enter key on the computer keyboard Mute Press the button to mute speaker volume Inserting or replacing the battery Troubleshooting HP Media Remote Control Select Models Only Button quick reference ButtonFunction For some multimedia software HP Media Remote Control Select Models Only Inserting or replacing the battery Troubleshooting Using power-saving states Power managementSetting power options Initiating and exiting Sleep Using the battery meter Initiating and exiting Hibernation Viewing the current power plan Using power plansSetting password protection on wakeup Selecting a different power plan Switching between graphics modes select models only Using external AC power Connecting the AC adapter Testing an AC adapter Finding battery information in Help and Support Using battery powerUsing Battery Check Displaying the remaining battery charge Inserting or removing the battery Charging a battery Managing low battery levels Maximizing battery discharge timeIdentifying low battery levels Resolving a low battery level Fully charge the battery Calibrating a batteryDisable Hibernation and Sleep Fully recharge the battery Discharge the batteryReenable Hibernation and Sleep Disposing of a used battery Conserving battery powerStoring a battery Replacing the battery Shutting down the computer Click Shut down Drives Handling drives Identifying the installed optical drive Optical drive Using optical discs DVD±RW/R CD-RW discs Selecting the right discCD-R discs DVD±R discs LightScribe DVD+R discs Playing a CD, DVD, or BDBlu-ray Disc Configuring AutoPlay Changing DVD region settings Observing the copyright warning Copying a CD or DVD Creating burning a CD or DVD Removing an optical disc CD, DVD, or BD Using external drives Using Disk Cleanup Using Disk DefragmenterImproving hard drive performance Identifying HP ProtectSmart Hard Drive Protection status Using HP ProtectSmart Hard Drive Protection software Replacing the hard drive Page Page Tighten the hard drive cover screws Replacing the hard drive Replacing a drive in the SmartBay Page Connecting a USB device Using a USB deviceExternal devices Removing a USB device Using an eSATA device Connecting an eSATA device Using the expansion port Removing an eSATA device External media cards Using Digital Media Slot cardsInserting a digital card Removing a digital card Configuring an ExpressCard Using ExpressCardsInserting an ExpressCard Page Removing an ExpressCard Memory modules Page Page Page Security Protecting the computer Using passwords Setting passwords in Windows Setting passwords in Setup Utility Administrator password Power-on password Entering an administrator password Using antivirus software Using firewall software Installing critical security updates Installing an optional security cable Using the fingerprint reader select models only Locating the fingerprint reader Registering fingerprints Using your registered fingerprint to log on to Windows Setup Utility Bios Starting Setup Utility Changing the language of Setup Utility Using Setup UtilityNavigating and selecting in Setup Utility Restoring default settings in Setup Utility Main menu Setup Utility menusExiting Setup Utility Security menu System Configuration menu Diagnostics menu Software updates Updating the Bios Determining the Bios version Downloading a Bios update Updating programs and drivers Backup and recovery Creating recovery discs Backing up your information Using Windows Backup and Restore Select Start All Programs Maintenance Backup and Restore Create a system restore point Using system restore pointsWhen to create restore points Restore to a previous date and time Performing a recovery Recovering from the recovery discs Symbols/Numerics Index DVD Jacks Ssid Wwan