HP CQ56-148CA, CQ56-110US, CQ56-100XX, CQ56-104CA, CQ56-112NR, CQ56-115DX Appendix B Routine care

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The computer is on but not responding	59
The computer is unusually warm	59
An external device is not working	59
The wireless network connection is not working	60
The optical disc tray does not open for removal of a CD	60
The computer does not detect the optical drive	61
A disc does not play	61
A movie is not visible on an external display	61
The process of burning a disc does not begin, or it stops before completion	62
Contacting customer support	62
Labels	63
Appendix B Routine care
Cleaning the display	65
Cleaning the TouchPad and keyboard	66
Appendix C Specifications
Input power	67
Operating environment	67
Appendix D Electrostatic discharge
Index	70

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Contents HP Notebook User Guide Product notice Safety warning notice Iv Safety warning notice Table of contents Multimedia Memory modules Security Appendix B Routine care Welcome Finding informationWelcome Getting to know your computer Lights TopTouchPad Top Button and speakers Keys Right side Left side Display Wireless antennas Bottom Additional hardware Networking Using an Internet service provider ISP Identifying wireless and network status icons Creating a wireless connectionUsing a Wlan Turning wireless devices on and offConnecting to an existing Wlan Setting up a new WlanProtecting your Wlan Roaming to another networkUsing Bluetooth wireless devices select models only Connecting to a local area network LANPage Using the keyboard Pointing devices and keyboardFunction Action key Using the TouchPad Setting pointing device preferencesUsing the media activity controls MultimediaAudio Checking your audio functions Adjusting the volumeWebcam select models only Video VGAPower management Shutting down the computerSetting power options Using power-saving statesUsing power management Using battery powerUsing the Power icon Displaying the remaining battery charge Inserting or removing the battery Charging a battery Maximizing battery life Managing low battery levelsConserving battery power Storing a batteryReplacing the battery Using external AC powerDisposing of a used battery Testing an AC adapter Drives Handling drivesReplacing or upgrading the hard drive Removing the hard driveInstalling the hard drive Page Using optical drives select models only Identifying the installed optical drivePlaying a CD Removing a CDPage External devices Using a USB deviceConnecting a USB device Using a USB device Removing a USB device Using optional external devicesUsing optional external drives Memory modules Page Page Page Protecting the computer Using passwordsSecurity Setting passwords in the operating system Operating system passwords FunctionBackup and Recovery Performing a system recovery Backing up your information Setup Utility Bios Starting Setup UtilityUsing Setup Utility Changing the language of Setup UtilityDisplaying system information Restoring factory default settings in Setup UtilityExiting Setup Utility Troubleshooting and support TroubleshootingComputer is unable to start up Computer screen is blankSoftware is functioning abnormally Computer is on but not respondingComputer is unusually warm An external device is not workingWireless network connection is not working Optical disc tray does not open for removal of a CDMovie is not visible on an external display Computer does not detect the optical driveDisc does not play Contacting customer support Labels ComponentRoutine care Cleaning the display Cleaning the TouchPad and keyboard Operating environment SpecificationsInput power Appendix C Specifications Electrostatic discharge Index LAN USBWlan

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