Dell Latitude D820 Technical Manual

Also see for D820 - Latitude Laptop Notebook: Quick reference guide Quick reference guide Quick reference guide Quick reference guide Service manual

Contents

• Run the Dell Diagnostics (see Dell Diagnostics).If you experience other memory problems —• Reseat the memory modules (see Memory) to ensure that your computer is successfullycommunicating with the memory.• Ensure that you are following the memory installation guidelines (see Memory).• Run the Dell Diagnostics (see Dell Diagnostics).Network ProblemsFill out the Diagnostics Checklist as you complete these checks.CAUTION: Before you begin any of the procedures in this section, follow the safetyinstructions in the Product Information Guide.GeneralCheck the network cable connector — Ensure that the network cable is firmly inserted into both thenetwork connector on the back of the computer and the network connector.Check the network lights on the network connector — No light indicates that no networkcommunication exists. Replace the network cable.Restart the computer and log on to the network again.Check your network settings — Contact your network administrator or the person who set up yournetwork to verify that your network settings are correct and that the network is functioning.Mobile Broadband NetworkNOTE: The Dell Mobile Broadband Card Utility user's guide is located under Help and Support.You can also download the user's guide from support.dell.com.NOTE: The icon appears in the notification area if the computer has a Dell Mobile Broadbandcard installed. Double-click the icon to launch the utility.Cannot connect — The Dell Mobile Broadband Card must be activated on the network in order toconnect. Position the mouse over the icon in the notification area to read the status of theconnection. If the status indicates the mobile broadband card is not activated, see Activate yourMobile Broadband card for more information. If problems persist, contact your Mobile Broadbandservice carrier for details on your plan.Check your Mobile Broadband network service — Contact your Mobile Broadband service carrier toverify coverage plan and supported services.Check the status in the Dell Mobile Broadband Card Utility — Click the icon in the taskbar tolaunch the utility. Check the status in the main window:• No card detected – Restart the computer and launch the utility again.