Dell 760 manual Video and Monitor Problems, No sound from headphones

Page 177

that the sound is not muted.

Disconnect headphones from the headphone connector — Sound from the speakers is automatically disabled when headphones are connected to the computer's front-panel headphone connector.

Test the electrical outlet — Ensure that the electrical outlet is working by testing it with another device, such as a lamp.

Eliminate possible interference — Turn off nearby fans, fluorescent lights, or halogen lamps to check for interference.

Run the speaker diagnostics

Reinstall the sound driver

Run the Hardware Troubleshooter — See Hardware Troubleshooter.

No sound from headphones

Check the headphone cable connection — Ensure that the headphone cable is securely inserted into the headphone connector (see the Setup and Quick Reference Guide that ships with your computer for more information).

Adjust the Windows volume control — Click or double-click the speaker icon in the lower-right corner of your screen. Ensure that the volume is turned up and that the sound is not muted.

Video and Monitor Problems

WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage on www.dell.com at www.dell.com/regulatory_compliance.

CAUTION: If your computer came with a PCI graphics card installed, removal of the card is not necessary when installing additional graphics cards; however, the card is required for troubleshooting purposes. If you remove the card, store it in a safe and secure location. For information about your graphics card, go to support.dell.com.

The screen is blank

NOTE: For troubleshooting procedures, see the monitor's documentation.

The screen is difficult to read

Check the monitor cable connection —

•Ensure that the monitor cable is connected to the correct graphics card (for dual graphics card configurations).

•If you are using the optional DVI-to-VGA adapter, ensure that the adapter is correctly attached to the graphics card and monitor.

•Ensure that the monitor cable is connected as shown on the setup diagram for your computer.

•Remove any video extension cables and connect the monitor directly to the computer.

•Swap the computer and monitor power cables to determine if the monitor's power cable is defective.

•Check the connectors for bent or broken pins (it is normal for monitor cable connectors to have missing pins).

Check the monitor power light —

•If the power light is lit or blinking, the monitor has power.

•If the power light is off, firmly press the button to ensure that the monitor is turned on.

•If the power light is blinking, press a key on the keyboard or move the mouse to resume normal operation.

Test the electrical outlet — Ensure that the electrical outlet is working by testing it with another device, such as a lamp.

Check the diagnostic lights —

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Contents Page LegacySelect Technology Control Advanced FeaturesManageability Active Management TechnologyAccessing iAMT setup IAMT FeaturesOut of Band Management Turning Off iAMTDell OpenManage Applications Alert Standard FormatDell Client Manager DCM Dell Client Manager DCM ConsolePhysical Security Option SettingsChassis Intrusion Detection Padlock Ring and Security Cable SlotEnabling the TPM Feature Trusted Platform Module TPMSecurity Management Software Computer Tracking Software Power Management for Windows XP and Windows VistaAbout Smart Cards and Fingerprint Readers Hyperthreading and Multi-Core TechnologyPower Schemes Tab Power Options PropertiesAdvanced Tab Hibernate TabSleep Mode Configuring Power Management SettingsOptions in Windows Vista Replacing the Battery BatteryBack to Contents Recommended Tools Working on Your ComputerBefore Working on Your Computer Turning Off Your ComputerAfter Working on Your Computer Desktop Computer About Your Computer Removing and Replacing PartsInstalling a PCI Card CardsPCI Cards Page Removing a PCI Card Removing a PCI Card From the Riser-Card Cage Page Installing a PCI Card in the Riser-Card Cage Page PS/2 Serial Port Adapter Installing a PS/2 Serial Port AdapterRemoving a PS/2 Serial Port Adapter Installing a PS/2 Serial Port Adapter in the Riser-Card Cage Removing a PS/2 Serial Port Adapter From the Riser-Card Cage Back to Contents Installing the Processor ProcessorRemoving the Processor Back to Contents Page Removing the Chassis Intrusion Switch Chassis Intrusion SwitchReplacing the Chassis Intrusion Switch Resetting the Chassis Intrusion DetectorSelect System Setup Connecting Drive Cables General Drive Installation GuidelinesData Interface Connectors Sata ConnectorConnecting and Disconnecting Drive Cables Power Cable ConnectorsDrive Inserts Removing Drive InsertsOptical Drive Replacing Drive InsertsRemoving an Optical Drive Installing an Optical Drive Removing a Floppy Drive Floppy DriveInstalling a Floppy Drive Removing a Media Card Reader Media Card ReaderInstalling a Media Card Reader Page Installing a Hard Drive Hard DriveRemoving a Hard Drive Page Back to Contents Installing the System Fan System FanRemoving the System Fan Heat Sink Assembly Removing the Heat Sink AssemblyInstalling the Heat Sink Assembly Back to Contents Panel Removing the I/O PanelReplacing the I/O Panel Page Replacing the Power Supply Power SupplyDC Power Connectors DC Power Connector P1Pin Number Signal name 18-AWG Wire DC Power Connector P4 DC Power Connector P2DC Power Connector P5 and P6 Pin Number Signal Name 22-AWG WireInstalling a Speaker SpeakersRemoving a Speaker Back to Contents Desktop Removing the Computer CoverInside View of Your Computer System Board Components Back to Contents Visit support.dell.com Contacting DellGlossary Docking device See APR Device driver See driverPage Page NIC See network adapter Module bay See media bayPage Video resolution See resolution Back to Contents DDR2 Memory Overview MemoryAddressing Memory Configurations Installing Memory Module sRemoving Memory Module s Mini Tower Computer Installing a PCI or PCI Express Card Page Removing a PCI or PCI Express Card PS/2 Serial Port Adapter Page Removing a PS/2 Serial Port Adapter Back to Contents Heat Sink and Processor Installing the Processor Back to Contents Chassis Intrusion Switch Back to Contents Drives Power cable Power input connector Installing a Hard Drive Page Adding a Second Hard Drive Floppy Drive Removing the Floppy Drive Installing the Floppy DriveRemoving the Media Card Reader Installing the Media Card Reader Optical Drive Installing an Optical Drive Back to Contents Panel Power Supply Pin Number Signal name AWG Wire DC Power Connector P7 DC Power Connectors P3, P5, P8, and P9Removing the Speaker Installing the SpeakerBack to Contents System Fan Page Inside Your Computer Mini Tower12VPOWER Back to Contents Replacing the Computer Cover Mini-Tower, Desktop, and Small Form FactorUltra Small Form Factor Release knob Cards Page Removing a PCI Card PCI Express and DVI Cards Installing a PCI Express x16 Card or DVI CardRemoving a PCI Express x16 Card or DVI Card Page PS/2 Serial Port Adapter Removing a PS/2 Serial Port Adapter Heat Sink and Processor Installing the Processor Page Back to Contents Chassis Intrusion Switch Select System Setup Serial ATA Sata Connector General Installation GuidelinesHard Drive Installing a Hard Drive Page Replacing a Hard Drive Fan Optical Drive Installing an Optical Drive Floppy Drive Installing a Floppy Drive Media Card Reader Installing a Media Card Reader Back to Contents System Fan Panel Back to Contents Power Supply DC Power Connectors DC Power Connector P6 DC Power Connectors P3Speakers Replace the computer cover Turn on power to the computer Small Form Factor Intspkr Fan connector Fancpu Small Form Factor Computer System Board Removing the System BoardMini Tower System Board Screws Small Form Factor System Board Screws Desktop System Board ScrewsUltra Small Form Factor System Board Screws Replacing the System BoardBack to Contents Entering System Setup System SetupSystem Setup Options System Setup ScreenInternal default Read Only DisableDisable Enable with PXE Enable with ImageSever Disable No bootOnboard/PEG Deactivate defaultQuiet SuggestedPower On Power Off defaultOn is set to disabled EnableChanging the Boot Sequence for the Current Boot Boot SequenceEnable F12 = Boot menu enabled by default Clear Log Mark all EntriesPassword Protection Booting to a USB DeviceChanging the Boot Sequence for Future Boots System PasswordAssigning a System Password Administrator PasswordTyping Your System Password Deleting or Changing an Existing System PasswordDisabling a Forgotten Password and Setting a New Password Jumper SettingsAssigning an Administrator Password Deleting or Changing an Existing Administrator PasswordMini Tower Desktop Small Form Factor Ultra Small Form Factor Jumper Setting Description Clearing Forgotten PasswordsClearing Cmos Settings Set Client Dhcp to Static IPChange the Lookup Method to Static IP Back to Contents Power Lights TroubleshootingDiagnostic Lights ToolsLight Pattern Problem Description Suggested Resolution Diagnostic Light Codes During PostBlinking Amber Steady AmberSteady Green Power Supply Diagnostic Light SteadyBlinking Green Beep Codes System MessagesCode Cause When to Use the Dell Diagnostics Dell DiagnosticsFix a Problem section, click Hardware Troubleshooter Hardware TroubleshooterStarting the Dell Diagnostics From Your Hard Drive Option Function Dell Diagnostics Main MenuBattery Problems Solving ProblemsDrive Problems Tab FunctionProblems writing to an optical drive Optical drive problemsHard drive problems Click Properties Tools Check NowIeee 1394 Device Problems Error MessagesClick Uninstall Click Start Control Panel Programs Programs and FeaturesLockups and Software Problems Keyboard ProblemsComputer does not start up Computer stops respondingOther software problems Memory ProblemsProgram crashes repeatedly Program is designed for an earlier Windows operating systemNetwork Problems Mouse ProblemsClick Start Control Panel Mouse Click Start Control Panel Hardware and Sound MousePrinter Problems Power ProblemsSound and Speaker Problems Scanner ProblemsNo sound from speakers Click Start Control Panel Hardware and Sound PrinterVideo and Monitor Problems No sound from headphonesScreen is blank Screen is difficult to read 3D image quality is poor Dell Technical Update ServiceOnly part of the display is readable Click Start Control Panel Appearance and ThemesRemove the cover see Removing the Computer Cover Module BayPage Securing a Device in the Module Bay Back to Contents Cable Cover Optional Attaching the Cable CoverRemoving the Cable Cover Heat Sink and Processor Installing the Processor Page Back to Contents Chassis Intrusion Switch Select System Setup Drives Removing the Hard Drive Page Replacing the Hard-Drive Fan Removing the Hard-Drive FanBack to Contents Installing the System Fans System FansRemoving the System Fans Back to Contents Power Button Removing the Power ButtonReplacing the Power Button Speakers Replace the computer cover Turn on power to the computer Ultra Small Form Factor System Board Components Dell Badge Ultra Small Form Factor Computer
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760 specifications

The Dell OptiPlex 760 is a highly regarded desktop computer that caters primarily to business environments. Released as part of Dell’s OptiPlex series, the 760 is designed for efficiency, reliability, and performance, making it a suitable choice for organizations looking for a dependable workstation.

One of the standout features of the Dell 760 is its versatility in form factor. It is available in mini-tower, desktop, and ultra-small form factor configurations, offering options that can fit various workspace requirements. This adaptability ensures that businesses can tailor their desktop setup based on space constraints or specific usage scenarios.

Powering the Dell 760 is an Intel Core 2 Duo processor, which provides a competent level of performance for typical office applications, multitasking, and data processing tasks. The system supports a wide range of processors, with options available for both dual-core and quad-core configurations, delivering the necessary horsepower for demanding applications.

In terms of memory, the OptiPlex 760 supports up to 8GB of DDR2 RAM, allowing for adequate multitasking capabilities. The inclusion of ample RAM helps improve the overall responsiveness of the system, making it perfect for business applications that require quick access to data and smooth operation.

Storage options on the Dell 760 include various hard drive capacities, ranging from 160GB to 500GB SATA HDDs. Additionally, the system can accommodate SSD upgrades for those seeking faster boot times and enhanced data access speeds, further improving efficiency in work environments.

Connectivity is another area where the Dell 760 excels. The desktop features a range of ports, including USB 2.0, VGA, and optional DisplayPort outputs, enabling users to connect multiple peripherals and displays easily. Integrated Ethernet allows for seamless network connections, which is crucial for businesses that rely on online connectivity and network sharing.

Another important characteristic of the Dell 760 is its energy efficiency. The system is designed to meet ENERGY STAR certification, making it a responsible choice for businesses looking to reduce their environmental impact and operating costs. This focus on sustainability aligns with modern corporate values, making the Dell 760 a forward-thinking solution.

In summary, the Dell OptiPlex 760 stands out as a reliable and efficient desktop solution for business use. With its range of form factors, powerful Intel processors, ample memory and storage options, extensive connectivity, and energy-efficient design, it remains a solid choice for organizations aiming to enhance their productivity while maintaining cost-effectiveness.
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