Dell 740-DT, 740-MT, 740, DCCY, DCSM

10. Replace the computer cover (see Replacing the Computer Cover).

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Contents

Main Advanced Features LegacySelect Technology Control Manageability Alert Standard Format DellOpenManageITAssistant Security Chassis Intrusion Detection Option Settings Padlock Ring and Security Cable Slot Password Protection Option Settings Assigning a System Password Typing Your System Password Deleting or Changing an Existing System Password Administrator Password Deleting or Changing an Existing Administrator Password Option Settings Assigning an Administrator Password Operating Your Computer With an Administrator Password Enabled Trusted Platform Module (TPM) Enabling the TPM Feature System Setup Overview Entering System Setup System Setup Screen System Setup Options Page Page Changing Boot Sequence for the Current Boot Changing Boot Sequence for Future Boots Booting to a USB Device Memory Key Floppy Drive Jumper Settings Mini Tower, Desktop, and Small Form Factor Computers Clearing Forgotten Passwords Clearing CMOS Settings HyperTransportandDual-Core Technology Power Management About RAID Configurations Verifying That RAID Is Working RAID Level 0 Configuration RAID Level 1 Configuration Configuring Your Hard Drives for RAID Setting Your Computer to RAID-Enabled Mode Using the NVIDIA MediaShield ROM Utility Using NVIDIA MediaShield Creating a RAID Array Deleting a RAID Array Converting From One RAID Configuration to Another RAID Configuration Rebuilding a RAID Configuration EnablingCool'n'QuietTechnology Battery Replacing the Battery Page Before You Begin Recommended Tools Turning Off Your Computer Before Working Inside Your Computer Page Cleaning Your Computer Computer, Keyboard, and Monitor Mouse Cleaning a Non-Optical Mouse Cleaning an Optical Mouse CDs and DVDs Desktop Computer About Your Desktop Computer Page Page Page Page Page Page Installing a PCI Card in the Riser-Card Cage Page Removing a PCI Card From the Riser-Card Cage Page PCI Express and DVI Cards Installing a PCI Express x16 Card or DVI-Card Page Removing a PCI Express x16 Card or DVI-Card Installing a PCI Express Card in the Riser-Card Cage Page Page Removing a PCI Express Card From the Riser-Card Cage Page Page Installing a Serial Port Adapter in the Riser-Card Cage Removing a Serial Port Adapter From the Riser-Card Cage Page Page Page Page Page Page Page Removing a Floppy Drive Installing a Floppy Drive Media Card Reader Removing the Media Card Reader Installing the Media Card Reader Removing the Hard Drive Page Removing and Replacing a Second Hard Drive Page Page Notes, Notices, and Cautions Desktop Computer Page Page Page DC Power Connector P2 DC Power Connector P3 DC Power Connector P4 DC Power Connector P5 and P6 Page Page Desktop Computer (Model # DCNE) Specifications Page Page Page Page FCC Regulatory Model (U.S. Only) DellOptiplex740Systems User's Guide Finding Information DellOptiplex740Systems User's Guide Drivers and Utilities Media Quick Reference Guide DellProductInformationGuide Dell Support Website support.dell.com Dell Support 3 Windows Welcome Center Windows Help and Support DellConnectServiceandSupport Operating System Media Getting Help Obtaining Assistance Online Services AutoTech Service Automated Order-Status Service Problems With Your Order Product Information Returning Items for Warranty Repair or Credit Before You Call Contacting Dell Glossary A B C D E F G H I K L M N O P R S T U V W X Z Memory DDR2 Memory Overview Mini Tower, Desktop, and Small Form Factor Matched Pairs Addressing Memory With 4-GB or Greater Configurations (32-bit Operating Systems Only) Removing Memory Installing Memory Page Page Page Page PCI Express Cards Installing a PCI Express x1 Card Page Removing a PCI Express x1 Card Installing PCI Express x16 Cards and DVI-Cards Page Removing PCI Express x16 Cards and DVI-Cards Page Page Page Page Page Page Page Page Power Cable Connectors Connecting and Disconnecting Drive Cables Removing a Hard Drive Page Page Adding a Second Hard Drive Drive-Panel Inserts Page Removing the Floppy Drive Installing the Floppy Drive Media Card Reader Removing the Media Card Reader Installing the Media Card Reader Page Page Page Notes, Notices, and Cautions Mini Tower Computer Page Page Page Page DC Power Connector P2 DC Power Connectors P3, P5, P8, and P9 DC Power Connector P7 Page Mini Tower Computer (Model #DCSM) Specifications Page Page Page Page Page MicrosoftWindowsXP and Windows VistaFeatures Transferring Information to a New Computer Microsoft Windows Vista MicrosoftWindowsXP Running the Files and Settings Transfer Wizard With the Operating System Media Running the Files and Settings Transfer Wizard Without the Operating System Media User Accounts and Fast User Switching Adding User Accounts Fast User Switching Setting Up a Home and Office Network Connecting to a Network Adapter Network Setup Wizard Replacing the Computer Cover Page Page PCI Express and DVI Cards Installing a PCI Express x16 Card or DVI Card Removing a PCI Express x16 Card or DVI Card Page Page Page Page Page Page Page Page Page Connecting and Disconnecting Drive Cables Removing a Hard Drive Page Page Replacing a Hard-Drive Fan Removing an Optical Drive Page Floppy Drive and Media Card Reader Removing a Floppy Drive or Media Card Reader Installing a Floppy Drive or Media Card Reader Page Page Notes, Notices, and Cautions Small Form Factor Computer Page Page Page Page DC Power Connector P2 DC Power Connectors P3 DC Power Connector P5 Small Form Factor Computer (Model # DCCY) Specifications Page Page Page Page Small Form Factor Computer About Your Small Form Factor Computer Page Page Page Page Reinstalling Drivers and the Operating System Drivers What Is a Driver? Identifying Drivers Reinstalling Drivers and Utilities Using Windows Vista Device Driver Rollback Using Windows XP Device Driver Rollback Using the Optional Drivers and Utilities media Manually Reinstalling Drivers for Windows Vista Using the Windows XP Drivers and Utilities Media Restoring Your Operating System Windows Vista Starting System Restore Undoing the Last System Restore Windows XP Reinstalling MicrosoftWindows Vistaand WindowsXP Before You Begin Booting From the Operating System Media Windows XP Setup Page Solving Problems DellOptiPlex740Systems User's Guide Troubleshooting Tips Battery Problems Card Problems Drive Problems CD and DVD drive problems Problems writing to an Optical-RW drive Hard drive problems E-Mail, Modem, and Internet Problems Keyboard Problems Fan Problems Lockups and Software Problems The computer does not start up The computer stops responding A program stops responding Media Card Reader Problems Memory Problems Mouse Problems Network Problems Power Problems Printer Problems Restoring Default Settings Serial or Parallel Device Problems Sound and Speaker Problems No sound from speakers No sound from headphones Video and Monitor Problems If the screen is blank If the screen is difficult to read Chassis Intrusion Switch Removing the Chassis Intrusion Switch Mini Tower Computer Desktop Computer Small Form Factor Computer Replacing the Chassis Intrusion Switch Resetting the Chassis Intrusion Detector Page Replacing the System Board Removing the System Board: Mini Tower, Desktop, and Small Form Factor Computers Mini Tower System Board Screws Desktop System Board Screws Small Form Factor System Board Screws Replacing the System Board: Mini Tower, Desktop, and Small Form Factor Computers Page Page Mini Tower Computer About Your Mini Tower Computer Page Page Page Page Troubleshooting Tools and Utilities Dell Diagnostics When to Use the Dell Diagnostics Starting the Dell Diagnostics From Your Hard Drive Starting the Dell Diagnostics From the Drivers and Utilities Media (Optional) System Lights Diagnostic Lights Beep Codes Error Messages Page Page Resolving Software and Hardware Incompatibilities MicrosoftWindowsXP Page Warranty

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Models: 740-DT 740-MT 740 DCCY DCSM