Dell Troubleshooting the Alert: Cover Was Previously Removed Message

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Gently pull the power cables toward you so that they do not get caught underneath the drives.

2.Ensure that no tools or extra parts are left inside the computer.

3.Close the cover:

a.Pivot the cover down.

b.Press down on the right side of the cover until it closes.

c.Press down on the left side of the cover until it closes.

d.Ensure that both sides of the cover are locked. If not, repeat step 3.

NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.

4.Connect your computer and devices to electrical outlets, and turn them on.

After you open and close the cover, the chassis intrusion detector, if enabled, causes the following message to appear on the screen at the next computer start-up:

ALERT! Cover was previously removed.

5.Reset the chassis intrusion detector by changing Chassis Intrusion to Enabled or Enabled-Silent.

Hint: If a setup password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector.

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Contents Dell Dimension Hints, Notices, and CautionsAbbreviations and Acronyms Diagnostic Codes Diagnostic Code Definition Corrective ActionSystem Codes and Messages Message Possible Cause Corrective Action Post Beep CodesSystem Messages Beep Codes Possible Cause Corrective ActionPost Downloading the Tell Me How Help File and Associated Files DocumentationPrinted Documentation Online DocumentationSafety Instructions When Using Your ComputerAdding Parts Protecting Against Electrostatic Discharge When Working Inside Your ComputerReattaching the Front Door and Hinge Arms Shutting Down the ComputerReattaching the Hinge Arms Adding Cards Opening the Computer CoverOpen the computer cover Close the computer cover Removing CardsRdram Overview Adding MemoryShut down the computer Replacing an AGP Card Adding a Second Hard Drive Adding Other Drives Inch Devices Inch Devices Replacing the Microprocessor Open the computer cover Installing the Microprocessor Replacing the Power Supply Removing the Power SupplyRemoving the Front I/O Panel Replacing the Power Supply Dimension 8200 System Board TypesReplacing the System Board Removing the System Board Replacing the System Board Closing the Computer CoverALERT! Cover was previously removed Solving Problems Accessing Help FilesPower Problems If the screen is blank Start-Up Error MessagesVideo and Monitor Problems Adjust the Windows display settingsIf you cannot print to a USB printer Sound and Speaker ProblemsPrinter Problems If you cannot print to a parallel port printerControl Panel, double-clickPhone and Modem Options Scanner ProblemsModem Problems Verify that the modem is communicating with WindowsCheck the mouse settings Mouse ProblemsKeyboard Problems Drive ProblemsIf the CD-RW drive stops writing If you have a hard drive problemUnder Error-checking, click Check Now If you cannot play a DVD movieNetwork Problems Microsoft Windows Error MessagesGeneral Program Problems Internet Connection Problems Mail ProblemsResolving Other Technical Problems Click Properties Reinstalling DriversUsing the Windows XP Device Driver Rollback At the Welcome Dell System Owner screen, click NextResolving Software and Hardware Incompatibilities Windows MeWindows Creating a Restore Point Using System RestoreRestoring the Computer to an Earlier Operating State Reinstalling Windows XPUndoing the Last System Restore Click Create a restore pointReinstalling Windows Me Reinstalling Windows Click Next in the Welcome to Windows Me windowClick I accept the Agreement, and then click Next Press Enter again to restart your computer Technical Specifications Controls and Lights PowerAudio2 VideoBack to Contents Overview System Setup ProgramViewing Settings System Setup Program ScreensOption Function PXE BIS Clearing Forgotten PasswordsTechnical Overview Internal View System Board Connectors and SocketsSocketed Microprocessor Power SupplyPin Number Signal name 18-AWG Wire DC Power ConnectorsPin Number Signal Name 22-AWG Wire DC Power Connector P2DC Power Connectors P3, P5, P6, P8, and P9 DC Power Connector P7Card Connector Card Description IDE Interface Cable Connections for Dell-Installed DrivesPlacement of Dell-Installed Cards IDE Channel Connector Location Dell Installed DriveFront View Controls and LightsWindows Label Back ViewSerial Connector Hints, Notices, and Cautions Abbreviations and Acronyms

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