Memory Problems; Network Problems - Dell Latitude D820 User Manual

problems connecting to the Internet, your computer might be infected with spyware. Use an anti-virus program that includes anti-spyware protection (your
program may require an upgrade) to scan the computer and remove spyware. For more information, go to support.dell.com and search for the keyword
spyware.
Run the Dell Diagnostics —
Memory Problems
Fill out the Diagnostics Checklist (see
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
If you receive an insufficient memory message —
Save and close any open files and exit any open programs you are not using to see if that resolves the problem.
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See the software documentation for minimum memory requirements. If necessary, install additional memory (see Memory).
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Reseat the memory modules to ensure that your computer is successfully communicating with the memory (see Memory).
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Run the Dell Diagnostics (see
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If you experience other memory problems —
Reseat the memory modules (see Memory) to ensure that your computer is successfully communicating with the memory.
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Ensure that you are following the memory installation guidelines (see Memory).
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Run the Dell Diagnostics (see
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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 —
network connector.
Check the network lights on the network connector —
Restart the computer and log on to the network again.
Check your network settings —
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
notification area to read the status of the connection. If the status indicates the mobile broadband card is not activated, see
card for more information. If problems persist, contact your Mobile Broadband service carrier for details on your plan.
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See Dell Diagnostics. If all tests run successfully, the error condition is related to a software problem.
Diagnostics Checklist) as you complete these checks.
Dell Diagnostics).
Dell Diagnostics).
as you complete these checks.
Ensure that the network cable is firmly inserted into both the network connector on the back of the computer and the
No light indicates that no network communication exists. Replace the network cable.
Contact your network administrator or the person who set up your network to verify that your network settings are correct
icon in the
Activate your Mobile Broadband