Dell Latitude D820 Technical Manual page 59

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Run the Dell Diagnostics (see
If you experience other memory problems —
•
Reseat the memory modules (see Memory) to ensure that your computer is successfully
communicating with the memory.
•
Ensure that you are following the memory installation guidelines (see Memory).
•
Run the Dell Diagnostics (see
Network Problems
Fill out the Diagnostics Checklist
CAUTION: Before you begin any of the procedures in this section, follow the safety
instructions in the Product Information Guide.
General
Check the network cable connector — Ensure that the network cable is firmly inserted into both the
network connector on the back of the computer and the network connector.
Check the network lights on the network connector — No light indicates that no network
communication 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 your
network to verify that your network settings are correct and that the network is functioning.
Mobile Broadband Network
NOTE: 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 Broadband
card installed. Double-click the icon to launch the utility.
Cannot connect — The Dell Mobile Broadband Card must be activated on the network in order to
connect. Position the mouse over the
connection. If the status indicates the mobile broadband card is not activated, see
Mobile Broadband card
service carrier for details on your plan.
Check your Mobile Broadband network service — Contact your Mobile Broadband service carrier to
verify coverage plan and supported services.
Check the status in the Dell Mobile Broadband Card Utility — Click the
launch the utility. Check the status in the main window:
•
No card detected – Restart the computer and launch the utility again.
Dell Diagnostics).
Dell Diagnostics).
as you complete these checks.
icon in the notification area to read the status of the
for more information. If problems persist, contact your Mobile Broadband
Activate your
icon in the taskbar to