HP 20-k120us Mobile, 20-k127cl Mobile, 20-k014us Mobile, 20-k121us Mobile Electrostatic Discharge

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13 Electrostatic Discharge

Electrostatic discharge is the release of static electricity when two objects come into contact—for example, the shock you receive when you walk across the carpet and touch a metal door knob.

A discharge of static electricity from fingers or other electrostatic conductors may damage electronic components. To prevent damage to the computer, damage to a drive, or loss of information, observe these precautions:

●If removal or installation instructions direct you to unplug the computer, first be sure that it is properly grounded, and then remove the cover.

●Keep components in their electrostatic-safe containers until you are ready to install them.

●Avoid touching pins, leads, and circuitry. Handle electronic components as little as possible.

●Use nonmagnetic tools.

●Before handling a component, discharge static electricity by touching an unpainted metal surface of the component.

●If you remove a component, place it in an electrostatic-safe container.

If you need more information about static electricity or assistance with component removal or installation, contact support.

54 Chapter 13 Electrostatic Discharge

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Contents User Guide Product notice Safety warning notice Iv Safety warning notice Table of contents Performing routine maintenance Wireless connection problems Vii Input power Operating specifications Fun things to do Starting rightBest practices Resource Contents More HP resourcesMore HP resources Front Getting to know your computerFinding your hardware and software information Locating hardwareRight side Right sideEnvironmental Notices Left side Back TopIdentifying the labels BottomLabels Using the wireless controls Connecting to a networkConnecting to a wireless network Using an Internet service providerProtecting your Wlan Setting up a WlanConfiguring a wireless router Connecting to a Wlan Connecting to a wired network Connecting to a local area network LANUsing the webcam Enjoying entertainment featuresVolume control Using audioUsing Beats Audio Using videoConnecting headphones Accessing Beats AudioOne-finger slide Navigating using the keyboard and pointing devicesUsing touch screen gestures Tapping ScrollingEdge swipes Pinching/stretchingRotating select models only Right-edge swipe Left-edge swipeTop-edge swipe and bottom-edge swipe Using the keyboard Fn keyUsing the action keys Icon Key DescriptionUsing Microsoft Windows 8 shortcut keys Using the integrated numeric keypadNum lock key Intel Rapid Start Technology select models only Managing powerInitiating Sleep and Hibernation Manually initiating and exiting SleepManually initiating and exiting Hibernation Setting password protection on wakeupHP CoolSense select models only Shutting down turning off the computer Using a USB device Managing and sharing informationConnecting a USB device Removing a USB deviceInserting and removing a memory card Using Disk Defragmenter Performing routine maintenanceUsing Disk Cleanup Maintaining peak performanceCleaning procedures Cleaning your computerCleaning products Using security measures Setting Windows passwordsInstalling software updates Setting Setup Utility Bios passwordsUsing Internet security software Installing Windows updatesUpdating software Determining the Bios version Starting Setup Utility BiosUpdating the Bios Using HP PC Hardware Diagnostics Uefi Downloading a Bios updateDownloading HP PC Hardware Diagnostics Uefi to a USB device Diagnostic section, click HP Uefi Support EnvironmentBacking up, restoring, and recovering Creating recovery media and backupsCreating HP Recovery media Restore and recovery Using Windows Refresh for quick and easy recovery Remove everything and reinstall WindowsWhat you need to know Recovering using HP Recovery ManagerUsing the HP Recovery partition select models only Changing the computer boot order Removing the HP Recovery partitionUsing HP Recovery media to recover Page Cannot connect to a Wlan TroubleshootingWireless connection problems Cannot connect to a preferred networkCannot connect to the wireless router Current network security codes are unavailableNetwork status icon is not displayed Power problemsHard drive error Computer will not turn on or startComputer is not responding Display problemsKeyboard and mouse problems Computer shuts down unexpectedlyPage Audio problems No sound is producedSoftware problems Operating specifications SpecificationsInput power Electrostatic Discharge Bios Index

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