HP 402 G1 manual Select Device Manager, Sound from headphones is not clear or muffled Cause

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Table 7-6Solving Audio Problems (continued)

Sound does not come out of the speaker or headphones.

Cause

Solution

 

 

The application is set to use a different audio device than

Some graphics cards support audio over the DisplayPort

speakers.

connection (if applicable), so multiple audio devices may be listed

 

in Device Manager. Make sure the correct device is being used.

 

To access Device Manager in Windows 8, from the Start screen,

 

type c, select Control Panel from the list of applications, and then

 

select Device Manager.

 

 

Some applications can select which audio output device is used.

Make sure the application has selected the correct audio device.

 

 

The operating system controls may be set to use a different audio

Set the operating system to use the correct audio device.

device as the default output device than what is expected.

 

 

 

Sound from headphones is not clear or muffled.

Cause

Solution

Headphones are plugged into the rear audio output connector. The rear audio output connector is for powered audio devices and is not designed for headphone use.

Plug the headphones into the headphone connector on the front of the computer.

Computer appears to be locked up while recording audio.

Cause

Solution

The hard disk may be full.

Before recording, make sure there is enough free space on the hard disk. You can also try recording the audio file in a compressed format.

Line-in jack is not functioning properly.

Cause

Solution

Jack has been reconfigured in the audio driver or application software.

In the audio driver or application software, reconfigure the jack or set the jack to its default value.

There is no sound or sound volume is too low.

Cause

Solution

The application is set to use a different audio device than speakers.

Some graphics cards support audio over the DisplayPort connection (if applicable), so multiple audio devices may be listed in Device Manager. Make sure the correct device is being used.

To access Device Manager in Windows 8, from the Start screen, type c, select Control Panel from the list of applications, and then select Device Manager.

72 Chapter 7 Troubleshooting without diagnostics

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Contents Maintenance & Service Guide Product notice Safety warning notice IiiIv Safety warning notice Table of contents Troubleshooting without diagnostics System board callouts100 103104 Vii106 107110 ViiiProduct features Standard configuration featuresDrive configuration may vary by model Standard configuration featuresSerial number location Product featuresRear panel components Downloading Windows 8 updates Activating and customizing the softwareActivating and customizing the software in Windows Activating the Windows operating systemIllustrated parts catalog Illustrated parts catalogMajor components Item Component Access panel Front bezel Fan sink Power supply, 250 W ProcessorsMiscellaneous parts Miscellaneous partsMass storage devices Hard drivesTB, 7200 rpm, 3.5 inch 500-GB, 7200 rpm, 3.5 inch Optical driveSerial ATA Hard Drive Characteristics Sata hard drivesSata hard drive cables Sata data cableSmart ATA drives Electrostatic discharge informationGenerating static Preventing electrostatic damage to equipmentPersonal grounding methods and equipment Grounding the work areaStatic Shielding Protection Levels Method VoltageOperating guidelines Recommended materials and equipmentGeneral cleaning safety precautions Cleaning the computer caseCleaning the keyboard Routine careService considerations Cleaning the displayCleaning the mouse Tools and software requirementsHard drives Cables and connectorsLithium coin cell battery Removal and replacement procedures Preparing to disassemble the computerAccess panel Description Installing and removing drivesRemoving a slim optical disc drive Page Page Installing a slim optical disc drive Page Remove the access panel see Access panel on Removing and replacing a 3.5-inch hard drivePage Page Page Front bezel To remove the front bezelPage GB memory module PC3-12800 4GB memory module PC3-12800 Remove the access panel see Access panel on MemoryMemory Page Expansion cards Page Fan Page RTC battery RTC batteryFan sink Page Processor Before removing the processor, follow these stepsPage Power supply Page System board To remove the system boardUpdating Smbios Information System boardSystem ID Setup Setup Field Name Comment LabelSystem board callouts Sys Bd Label ComponentFront I/O USB connector RTC batteryNetwork connector and USB VGA connectorComputer Setup F10 Utility Computer Setup F10 Utilities1Computer Setup F10 Utility Using Computer Setup F10 UtilitiesComputer Setup F10 Utility Computer Setup-File 2Computer Setup-FileComputer Setup-Storage 3Computer Setup-StorageComputer Setup-Security 4Computer Setup-SecurityNetwork Boot Master Boot RecordDevice Security USB SecurityDriveLock Security System Security theseSystem Security Legacy Support to disabled Secure BootConfiguration Computer Setup-Power 5Computer Setup-PowerComputer Setup-Advanced 6Computer Setup-Advanced for advanced usersPCI SERR# Generation. Default is enabled VGA Configuration AMT ConfigurationBus Options Device OptionsRecovering the configuration settings Troubleshooting without diagnostics Safety and comfort Before you call for technical supportHelpful hints Solving general problems Solving general problems1Solving General Problems Computer date and time display is incorrect Cause SolutionCause Solution There is no sound or sound volume is too low Cause SolutionCannot remove computer cover or access panel Cause Solution Poor performance Cause SolutionUnder Windows System, click Run Solution Solving power problems Solving power problems2Solving Power Problems Power supply shuts down intermittently Cause SolutionSolving hard drive problems 3Solving Hard Drive ProblemsSolving hard drive problems Solving media card reader problems 4Solving Media Card Reader ProblemsCan not write to the media card Cause Computer’s software is used to safely eject the cardSolving display problems Solving display problems5Solving Display Problems Blank screen no video Cause SolutionScreen resolution Dim characters Cause Solution Image is not centered Cause SolutionNo Connection, Check Signal Cable displays on screen Cause Select the monitor’s Auto-Adjustment optionOut of Range displays on screen Cause Monitor’s on-screen display menu6Solving Audio Problems Solving audio problemsSolving audio problems Sound from headphones is not clear or muffled Cause There is no sound or sound volume is too low CauseSelect Device Manager Line-in jack is not functioning properly Cause7Solving Printer Problems Solving printer problemsSolving printer problems Solving keyboard and mouse problems 8Solving Keyboard ProblemsSolving hardware installation problems 9Solving Mouse ProblemsShut down the computer using the keyboard Components10Solving Hardware Installation Problems Computer will not start Cause SolutionSolving network problems Solving network problems11Solving Network Problems Power SavingsAdvanced Device Options S5 Wake on LAN Wake-on-LAN feature is not functioning Cause SolutionNetwork status link light never flashes Cause Solution Correct operating mode Diagnostics reports a failure Cause SolutionSettings for the board Cable CorrectlyNew network card will not boot Cause Solution 12Solving Memory Problems Solving memory problemsSolving memory problems Solving processor problems 13Solving Processor ProblemsSome fans only operate when needed Make sure the processor heat sink is installed properlySolving CD-ROM and DVD problems Solving CD-ROM and DVD problems14Solving CD-ROM and DVD Problems Computer Setup utilityMovie will not play in the DVD drive Cause Solution Cannot eject compact disc tray-load unit CauseSolving USB flash drive problems Solving front panel component problemsSolving USB flash drive problems 15Solving USB Flash Drive ProblemsSolving internet access problems Set to Enabled in Security USB SecurityUnable to connect to the Internet Cause Solution Click Internet OptionsSolving software problems Solving software problemsContacting customer support How to access and run HP PC Hardware Diagnostics Uefi HP PC Hardware DiagnosticsWhy run HP PC Hardware Diagnostics Uefi Diagnostic section, click HP Uefi Support Environment Backing up your information Backup and RecoveryBackup and recovery in Windows Follow the on-screen instructions Backup and Recovery Performing a system recoveryTo recover information you previously backed up Using f11 recovery tools Post Error Messages Post Error MessagesPost Numeric Codes and Text Messages 1Numeric Codes and Text MessagesPost Numeric Codes and Text Messages Flash Screen Image Corrupted Flash Screen image has errors Reseat power supply fanReconfigure card resources and/or run Computer Setup or Windows utilitiesEmulation to IDE, and select File Save Inventory error during MEBx execution Try a different USB key device forFunctionality contained in the system Bios System Bios versionGeneral error during MEBx execution System Bios and ME firmwareInterpreting Post diagnostic front panel LEDs 2Diagnostic front panel LEDs and audible codesPossible Cause Recommended Action White Power LED On ActivityInterpreting Post diagnostic front panel LEDs Possible Cause Recommended ActionRed Power LED flashes seven Recovery Mode section of the DesktopInstall a TXT capable processor Previously enabled on thisEstablishing a Setup or Power-on password Password Security and Resetting CmosEstablishing a Setup or Power-on password Password Security and Resetting Cmos Resetting the Setup and Power-on passwordClearing and resetting the Cmos Page General requirements Power Cord Set RequirementsJapanese Power Cord Requirements Country Accrediting Agency Country-specific requirementsCountry-specific requirements Statement of Volatility Appendix B Statement of VolatilityEnter the F10 setup utility Appendix C Specifications SpecificationsSpecifications Index All-in One chassis Fan Password Fan sink 103 ProblemsNetwork Setup password 103 Power Software Printer Problems Product ID location Removal and replacement
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