Dell 780 service manual Assigning a System Password, If Password Status is set to Locked

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You can only assign a system password when the following option is displayed:

Not Set — No system password is assigned and the password jumper on the system board is in the enabled position (the default setting).

Assigning a System Password

To exit without assigning a system password, press <Esc> at any time (before you press the OK button in step 4).

1.Enter system setup (see Entering System Setup).

2.Select System Password, and verify that Password Status is set to Not Set.

3.Type your new system password.

You can use up to 32 characters. To erase a character when entering your password, press <Backspace>. The password is case sensitive.

Certain key combinations are not valid. If you enter one of these invalid combinations, the speaker emits a beep.

As you press each character key (or the spacebar for a blank space), a placeholder appears.

4.Type your new password a second time to confirm and press OK button. The password setting changes to Set.

Typing Your System Password

When you start or restart your computer, the following prompt appears on the screen.

If Password Status is set to Locked:

Type the password and press <Enter>.

If you have assigned an administrator password, the computer accepts your administrator password as an alternate system password.

If you type a wrong or incomplete system password, the following message appears on the screen:

** Incorrect password. **

If you again type an incorrect or incomplete system password, the same message appears on the screen. The third and subsequent times you type an incorrect or incomplete system password, the computer displays the following message:

** Incorrect password. **

Number of unsuccessful password attempts: 3 System halted! Must power down.

Even after your computer is turned off and on, the previous message is displayed each time you type an incorrect or incomplete system password.

NOTE: You can use Password Status in conjunction with System Password and Admin Password to further protect your computer from unauthorized changes.

Deleting or Changing an Existing System Password

1.Enter system setup (see Entering System Setup).

2.Go to SecuritySystem Password and press <Enter>.

3.When prompted, type the system password.

4.Press <Enter> twice to clear the existing system password. The setting changes to Not Set.

If Not Set is displayed, the system password is deleted. If Not Set is not displayed, press <Alt><b> to restart the

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Contents Rev. A01 Working on Your Computer Before Working Inside Your ComputerTurning Off Your Computer After Working Inside Your ComputerWindows Vista Windows XP Click Start Turn Off Computer Turn OffRemoving and Replacing Parts Specifications External Connectors System Board ConnectorsPower DrivesEnvironmental System Board Layout Entering System Setup System SetupOverview System Setup Options Disable PS/2 default ECP No DMACOM1 COM3 Front USB Rear Dual USB Rear Quad USB PCI slots AudioDeactivate default Activate Clear Deactivate default Disable ActivatePower Off default Power OnImage Server Static IPEnable F12 = Boot menu enabled by default Boot SequenceClear Log Mark all Entries Booting to a USB Device Password ProtectionAssigning a System Password If Password Status is set to LockedAdministrator Password Clearing Forgotten Passwords Jumper SettingsJumper Setting Description Clearing Cmos Settings Page Diagnostics Dell DiagnosticsPower Button Light Codes Power Light State Off Blinking Amber Solid DescriptionOption Function Tab FunctionAmber Blinking Green Solid Beep CodesCode Cause Diagnostic Lights Light Pattern Problem Description Suggested ResolutionStarts normally, troubleshoot the last card removed from Cover Removing the CoverReplacing the Cover Cover Replacing the Cover Drive Cage Removing the Drive CagePage Page Replacing the Drive Cage Optical Drive Removing the Optical DriveReplacing the Optical Drive Wireless Local Area Network Wlan Card Removing the Wlan CardPage Replacing the Wlan Card System Fan Removing the System FanPage Replacing the System Fan Heat Sink and Processor Removing the Heat Sink and ProcessorPage Page Replacing the Heat Sink and Processor Intrusion Switch Removing the Intrusion SwitchReplacing the Intrusion Switch Coin-Cell Battery Removing the Coin-Cell BatteryReplacing the Coin-Cell Battery System Board Removing the System BoardPage Page Replacing the System Board Front Bezel Removing the Front BezelReplacing the Front Bezel Hard Drive Removing the Hard DriveReplacing the Hard Drive Control Panel Removing the Control PanelPage Replacing the Control Panel Internal Antenna Cable Removing the Internal Antenna CablePage Replacing the Internal Antenna Cable Internal Speaker Removing the Internal SpeakerReplacing the Internal Speaker Memory Removing the Memory ModulesReplacing the Memory Modules Panel Removing the I/O PanelPage Replacing the I/O Panel Power Supply Removing the Power SupplyPage Replacing the Power Supply
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780 specifications

The Dell OptiPlex 780 is a versatile desktop computer that stands out for its reliability, performance, and energy efficiency, making it an ideal choice for businesses and individuals alike. Launched as part of Dell's OptiPlex series, the 780 caters to a wide range of computing needs, from basic office tasks to more demanding applications.

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Overall, the Dell OptiPlex 780 combines robust performance, extensive connectivity options, advanced security features, and energy efficiency, making it an exceptional choice for a diverse range of users. Whether in a corporate setting or at home, it continues to deliver dependable performance that meets the demands of modern computing.