Solving audio problems | HP E1Z75UT E1Z75UT#ABA instruction

Solving audio problems

If the computer has audio features and you encounter audio problems, see the common causes and solutions listed in the following table.

Sound cuts in and out.

Cause	Solution

Processor resources are being used by other open	Shut down all open processor-intensive applications.
applications.

Sound does not come out of the speaker or headphones.

Cause

Solution

Software volume control is turned down or muted.

Double-click the Speaker icon on the taskbar, then make sure that Mute is not selected and use the volume slider to adjust the volume.

NOTE: In Windows 8, the taskbar is available at the bottom of the Desktop screen.

Audio is hidden in Computer Setup.

Enable the audio in Computer Setup: Security > Device Security > System Audio.

The external speakers are not turned on.

Turn on the external speakers.

The audio device may be connected to the wrong jack.

Ensure that the device is connected to the correct jack on the computer. The rear audio jack output is the green receptacle. The speakers should be plugged into the line-out jack and the headphones should be plugged into the headphone jack.

External speakers plugged into the wrong audio jack on a recently installed sound card.

See the sound card documentation for proper speaker connection. The rear audio jack output is the green receptacle.

Headphones or devices connected to the line-out connector mute the internal speaker.

Turn on and use headphones or external speakers, if connected, or disconnect headphones or external speakers.

Computer is in Sleep state.

Press the power button to resume from Sleep state.

CAUTION: When attempting to resume from Sleep state, do not hold down the power button for more than four seconds. Otherwise, the computer will shut down and you will lose any unsaved data.

Internal speaker is disabled in Computer Setup.	Enable the internal speaker in Computer Setup. Select
	Advanced > Device Options > Internal Speaker.

166	Chapter 8 Troubleshooting without diagnostics

Image 176

HP E1Z75UT E1Z75UT#ABA Solving audio problems, Troubleshooting without diagnostics, Sound cuts in and out Cause Solution

Contents

Maintenance and Service Guide Product notice About This Book Iii Iv About This Book Table of contents Removal and replacement procedures Tower TWR Removal and replacement procedures Small Form Factor SFF Computer Setup F10 Utility 132 Password security and resetting Cmos 200 Appendix C Power cord set requirements 226 TWR specifications 228 SFF specifications 229 Product features Standard configuration featuresStandard configuration features Tower TWR Product features Small Form Factor SFF Tower TWR front panel components Small Form Factor SFF front panel components Tower TWR rear panel components Small Form Factor SFF rear panel components Serial number location Tower TWR Small Form Factor SFF Activating the Windows operating system Activating and Customizing the SoftwareActivating and customizing the software in Windows Downloading Windows 7 updates Installing or upgrading device driversRun Windows Update monthly thereafter Customizing the monitor display Downloading Windows 8 updates Click Settings Change PC Settings Illustrated parts catalog Tower TWR chassis spare partsComputer major components Tower TWR chassis spare parts Access panel Power supplyIllustrated parts catalog Description Spare part number Front bezel Cables Misc parts Drives Misc boards Sequential part number listingDescription Spare part number Spare part Description Number Tower TWR chassis spare parts Illustrated parts catalog Tower TWR chassis spare parts Small Form Factor SFF chassis spare parts Small Form Factor SFF chassis spare parts Power switch assemblySata drive power cable Chassis stand Fan ductRubber foot Keyboard Misc boards Small Form Factor SFF chassis spare parts Illustrated parts catalog 732772-001 Solenoid lock 733687-001 HP WLAN/Bluetooth module Electrostatic discharge information Relative Humidity Event 55% 40% 10% Generating staticPreventing electrostatic damage to equipment Personal grounding methods and equipment Grounding the work areaRecommended materials and equipment Static Shielding Protection Levels Operating guidelines General cleaning safety precautions Cleaning the Computer CaseCleaning the keyboard Routine care Service considerations Cleaning the monitorCleaning the mouse Power supply fan Cables and connectors Tools and software RequirementsScrews Hard Drives Sata hard drives Lithium coin cell batterySerial ATA Hard Drive Characteristics Sata hard drive cables Smart ATA drivesCable management Sata data cable Removal and replacement procedures Tower TWR Preparation for disassembly Access panel Front bezel security Front bezel Bezel blanks Page Memory DIMMsDDR3-SDRAM DIMMs Populating Dimm sockets Installing DIMMs Page Expansion cards Page Page Page System Board Connector System Board Label Color Component System board connections Hard drives DrivesDescription Spare part number Optical drives Guide Screw Device Drive positions Installing a 5.25-inch drive Removing a 5.25-inch drivePage Removing a 3.5-inch device Page Installing a 3.5-inch device Removing a slim optical drive Installing a slim optical drive Removing a 3.5-inch or 2.5-inch hard drive Page Installing a 3.5-inch or 2.5-inch hard drive Page Page Page Front I/O assembly Media Power switch/LED assembly Page Fan sink Page Intel Core i5 processors ProcessorDescription Spare part number Intel Core i7 processor Speaker Smart Cover Lock solenoid lock Hlock Page Hood sensor Fan Page Power supply PWR Pwrcpu PwrcmdPage Page System board Page Removal and replacement procedures Small Form Factor SFF Access panel 732760-001 Front bezel 732757-001 Optical drive bezel blank 732769-001 Front bezel security Page Bezel blanks Memory Installing DIMMs Page Expansion card Page Page Page Blue Front USB 3.0 Ports Drives Page Drive positions Removing a 3.5-inch device Installing a 3.5-inch device Page Removing a slim optical drive Installing a slim optical drive Removing and replacing a 3.5-inch hard drive Page Page Installing a 2.5-inch hard drive Removing a 2.5-inch hard drivePage Pwrcpu Pwrcmd PWR Page Page Fan duct Solenoid lock 732772-001 Hlock 118 Removal and replacement procedures Small Form Factor SFF Hood sensor Cable routing Front I/O assembly 732755-001 Page Power switch assembly Page Speaker 727149-001 Fan sink 727150-001 Processor Page System board Changing from desktop to tower configuration Page Computer Setup F10 Utility Computer Setup F10 Utilities Using Computer Setup F10 Utilities Computer Setup-File Computer Setup F10 Utility Computer Setup-Storage Removable Media Boot Storage Options Sata Emulation DPS Self-Test Boot OrderShortcut to Temporarily Override Boot Order Computer Setup-Security Option Description Setup PasswordPower-On Password Network Boot Device SecurityUSB Security Slot Security Security System Security Virtualization Technology Directed I/O Secure Boot DriveLock Security Management Computer Setup-PowerOption Description OS Power Hardware Power Thermal Computer Setup-Advanced Option Heading Power-On Options Bios Power-On Onboard DevicesBus Options Device Options AMT Configuration Recovering the Configuration SettingsVGA Configuration Troubleshooting without diagnostics Safety and comfort Before you call for technical support Helpful hints Refer to Helpful hints on page 149 in this guidePage Solving general problems Computer date and time display is incorrect Cause Solution Poor performance Cause Solution 152 Troubleshooting without diagnosticsCannot remove computer cover or access panel Cause Solution Go to Start All Programs Accessories RunAll apps icon Under Windows System, click Run 154 Troubleshooting without diagnostics Solving power problems Power supply shuts down intermittently Cause Solution Solving hard drive problems 156 Troubleshooting without diagnosticsHard drive error occurs Cause Solution Tools tab. Under Error-checking click Check Now Disk transaction problem Cause Solution Drive not found identified Cause SolutionAdvanced Power-On Options Nonsystem disk/NTLDR missing message Cause Solution 158 Troubleshooting without diagnostics Computer will not boot from hard drive Cause SolutionComputer seems to be locked up Cause Solution Security Device Security Can not write to the media card Cause Solution Solving media card reader problemsSolving media card reader problems 159 Blank screen no video Cause Solution Solving display problems160 Troubleshooting without diagnostics Solving display problems 162 Troubleshooting without diagnostics Dim characters Cause Solution Image is not centered Cause Solution Select ImageControl/ Horizontal Position or Vertical 164 Troubleshooting without diagnostics Out of Range displays on screen Cause Solution Certain typed symbols do not appear correct Cause Solution Character Map Solving audio problems 166 Troubleshooting without diagnosticsSound cuts in and out Cause Solution Advanced Device Options Internal Speaker Solving audio problems Line-in jack is not functioning properly Cause Solution Solving printer problems 168 Troubleshooting without diagnosticsThere is no sound or sound volume is too low Cause Solution Printer will not print Cause Solution Solving keyboard and mouse problems Solving keyboard and mouse problems 169Printer will not turn on Cause Solution Printer prints garbled information Cause Solution 170 Troubleshooting without diagnostics Solving Hardware Installation Problems Solving Hardware Installation Problems 171 172 Troubleshooting without diagnostics Solving Hardware Installation Problems 173 Solving Network Problems 174 Troubleshooting without diagnostics Control Panel, and then select Device Manager Network status link light never flashes Cause SolutionManager 176 Troubleshooting without diagnostics Diagnostics reports a failure Cause Solution Solving memory problems New network card will not boot Cause Solution 178 Troubleshooting without diagnostics Out of memory error Cause SolutionMemory count during Post is wrong Cause Solution Insufficient memory error during operation Cause Solution Cause Solution Solving processor problemsPoor performance is experienced Cause Solution Storage Boot Order Solving CD-ROM and DVD problems180 Troubleshooting without diagnostics Movie will not play in the DVD drive Cause Solution Cannot eject compact disc tray-load unit Cause Solution Solving USB flash drive problems 182 Troubleshooting without diagnosticsUSB flash drive not found identified Cause Solution System will not boot from USB flash drive Cause Solution Solving front panel component problems Solving Internet access problemsSolving front panel component problems 183 Unable to connect to the Internet Cause Solution Select the Cookies check box and click the Delete button 184 Troubleshooting without diagnosticsSelect Start Control Panel Click Internet Options Solving software problems ROM issue Post error has occurred 186 Troubleshooting without diagnostics System files may be damaged Post error messages Post error messages ROM Download to Disable toPost numeric codes and text messages Control panel message Description Recommended action Post numeric codes and text messages Verify monitor is attached and turned CPU or Chassis Fan not Detected Will fix an erroneous error message Drivelock Security. For each listed If the error persists, replace the system board Post error messages Fails into the General grouping. Status White Power LED On None Computer on Activity Beeps Possible cause Recommended action Is not spinning, make sure the fans cable is For systems with a graphics card Install a TXT capable processor Password security and resetting Cmos Resetting the password jumper Clearing and resetting the Cmos Page How to access and run HP PC Hardware Diagnostics Uefi HP PC Hardware DiagnosticsWhy run HP PC Hardware Diagnostics Uefi Downloading HP PC Hardware Diagnostics to a USB device System backup and recovery System backup and recoveryBacking up, restoring, and recovering in Windows Creating recovery media and backups Restoring and recovering using Windows 8 tools Using Windows 8 Refresh Using Windows 8 Reset Select Reset Follow the on-screen instructions to continue Follow the on-screen instructions System backup and recoveryPage Creating recovery media Start Help and Support Click All Programs Next To create the Windows DVD System Restore Follow the on-screen instructions to set up your backup System Recovery System Recovery when Windows is responding System Recovery when Windows is not responding If Security and Protection is listed, continue with stepPage Select Install now Battery replacement Type Page Unlocking the smart cover lock Smart cover FailSafe keyPage Page General requirements Power cord set requirementsJapanese power cord requirements Country Accrediting Agency Country-specific requirementsCountry-specific requirements 227 Appendix D Specifications SpecificationsTWR specifications SFF specifications Rated Input Current Access panel Locked Locking and unlocking 223 Index Keyboard Cleaning Spare part numbers Keyboard problems 169 SFF TWR Password 119 SFF power supply 112 Sata Windows Backing up information 215 Backup and recovery