HP C7S02UA#ABA, C2M17UA#ABA, C2L36UA#ABA manual Troubleshooting power problems

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WARNING! Do not charge the computer battery while you are onboard aircraft.

When charging or calibrating a battery

When installing or modifying system software

When writing information to a disc (select models only)

When running Disk Defragmenter on computers with internal hard drives

When performing a backup or recovery

When you connect the computer to external AC power:

The battery begins to charge.

The display brightness increases.

The power meter icon on the Desktop changes appearance. When you disconnect external AC power, the following events occur:

The computer switches to battery power.

The display brightness automatically decreases to save battery life.

The power meter icon on the Desktop changes appearance.

Troubleshooting power problems

Test the AC adapter if the computer exhibits any of the following symptoms when it is connected to AC power:

The computer does not turn on.

The display does not turn on.

The power lights are off.

To test the AC adapter:

1.Shut down the computer.

2.Remove the battery from the computer.

3.Connect the AC adapter to the computer, and then plug it into an AC outlet.

4.Turn on the computer.

If the power lights turn on, the AC adapter is working properly.

If the power lights remain off, check the connection from the AC adapter to the computer and the connection from the AC adapter to the AC outlet to make sure the connections are secure.

If the connections are secure and the power lights remain off, the AC adapter is not functioning and should be replaced.

Contact customer support for information on obtaining a replacement AC power adapter.

Running on external AC power 47

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Contents User Guide Software terms Product noticeSafety warning notice Iv Safety warning notice Table of contents Enjoying entertainment features Using the integrated numeric keypad Maintaining your computer Input power Operating environment Page Best practices Starting rightFun things to do More HP resources Resource ContentsFinding your hardware and software information Getting to know your computerFront Locating hardwareInitiating Sleep and Hibernation on Right sideGetting to know your computer Left side Rear Select CyberLink YouCam DisplayTouchPad TopLights Hibernation on Buttons, speakers, and fingerprint readerSound , and then select Beats Audio Control Panel KeysNum lock key Bottom Component LabelsConnecting to a wireless network Connecting to a networkUsing the wireless controls Using the wireless buttonUsing a Wlan Using operating system controlsUsing an Internet service provider Setting up a Wlan Configuring a wireless routerProtecting your Wlan Connecting to a Wlan Using Bluetooth wireless devices select models onlyConnecting to a local area network LAN Connecting to a wired networkMultimedia Features Enjoying entertainment featuresUsing the webcam Hardware and Sound , and then select BeatsAudio Control Panel Connecting speakers Using audioConnecting headphones Connecting a microphoneChecking the sound Using videoConnecting a VGA monitor or projector Connecting an Hdmi device Using Intel Wireless Display select models only Configuring audio settings with Hdmi TVManaging your audio and video files Page Turning the TouchPad off or on Using the TouchPadTapping Using TouchPad gesturesPinching/zooming ScrollingFinger click select models only Rotating select models onlyFlicking select models only Edge swipesRight-edge swipe Left-edge swipe Top-edge swipeUsing the keys Using the keyboard and mouseUsing the action keys Icon Key DescriptionShortcut Key Description Using Microsoft Windows 8 shortcut keysUsing the integrated numeric keypad Using the hot keysFunction Hot key Description Managing power Initiating Sleep and Hibernation Intel Rapid Start Technology select models onlyInitiating and exiting Sleep Enabling and exiting user-initiated hibernation Setting password protection on wakeupUsing the power meter and power settings Selecting a power plan Factory-sealed battery Running on battery powerRemoving a user-replaceable battery Finding battery informationConserving battery power Identifying low battery levelsResolving a low battery level Storing a user-replaceable battery Running on external AC powerDisposing of a user-replaceable battery Replacing a user-replaceable batteryTroubleshooting power problems HP CoolSense select models only Page Shutting down turning off the computer Connecting a USB device Using a USB deviceManaging and sharing information Type DescriptionRemoving a USB device Connecting a powered USB deviceInserting and removing a digital storage card Using optical drives Inserting an optical disc Removing an optical disc Select Open Network and Sharing Center Sharing data and drives and accessing softwareMaintaining your computer Improving performanceHandling drives Replacing a hard drive Page Using HP 3D DriveGuard select models only Using Disk DefragmenterUsing Disk Cleanup Adding or replacing memory modules Page Page Cleaning the display, sides, and cover Cleaning your computerCleaning the TouchPad and keyboard Updating programs and driversTraveling with or shipping your computer Securing your computer and information Computer risk Security featureUsing passwords Setting Windows passwordsPassword Function Setting Setup Utility Bios passwords Using the fingerprint readerSetting up Windows logon Using HP SimplePass select models onlyUsing your registered fingerprint to log on to Windows Registering fingerprintsUsing Internet security software Using antivirus softwareUsing firewall software Securing your wireless network Installing software updatesInstalling Windows updates Installing HP and third-party software updatesUsing an optional security cable lock Starting Setup Utility Bios Using Setup Utility Bios and System DiagnosticsUpdating the Bios Determining the Bios versionDownloading a Bios update Using System Diagnostics Backing up, restoring, and recovering See Creating HP Recovery media on Creating recovery media and backupsCreating HP Recovery media Restore and recovery Remove everything and reinstall Windows Using Windows Refresh for quick and easy recoveryWhat you need to know Recovering using HP Recovery ManagerUsing HP Recovery media to recover Changing the computer boot order Removing the HP Recovery partitionSpecifications Input powerInput power Rating Operating environment Electrostatic Discharge Index BiosJacks