Dell Latitude 120L - Manual (Page 97)

Save and close any open files or programs and shut down your computer through the Start menu.
Scan the computer for spyware —
If you are experiencing slow computer performance, you frequently receive pop-up advertisements, or you are having 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 —
If all tests run successfully, the error condition is related to a software problem. See Dell Diagnostics .
Memory Problems
Fill out the Diagnostics Checklist as you complete these checks.
If you receive an insufficient memory message —
l Save and close any open files and exit any open programs you are not using to see if that resolves the problem.
l See the software documentation for minimum memory requirements. If necessary, install additional memory. See Memory .
l Reseat the memory modules to ensure that your computer is successfully communicating with the memory. See Memory .
l Run the Dell Diagnostics. See Dell Diagnostics .
If you experience other memory problems —
l Reseat the memory modules to ensure that your computer is successfully communicating with the memory. See Memory .
l Ensure that you are following the memory installation guidelines. See Memory .
l Run the Dell Diagnostics. See Dell Diagnostics .
Network Problems
Fill out the Diagnostics Checklist as you complete these checks.
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 jack.
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.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.