User's Manual

170 Solving Problems
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NOTE: If you installed up to 4 GB of memory but not all of it is available for
use by the OS, see "Addressing Memory with 4-GB Configurations."
Basic Checks:
• Check the diagnostic lights to see if the specific problem is identified.
• If an insufficient memory message appears, save and close any open
files and exit any open application programs not in use. Consider
installing additional system memory.
• Restart the computer.
• Run the System Memory test group in the Dell Diagnostics.
• If you have the optional memory riser boards installed, reseat the riser
boards.
• Reseat the memory modules in system board or riser board sockets.
• If you are not using the optional memory riser boards, verify that all
system board memory sockets contain a RIMM or CRIMM.
• Memory modules must be installed in matched pairs. Ensure that the
modules installed in system board or memory riser board socket pairs
are identical. To identify system board socket pairs, see "System Board
Memory Components." To identify memory riser board socket pairs,
see "Memory Riser Board Components."
If the problem still exists after you complete the basic checks, fill out the
Diagnostics Checklist as you perform the following steps.
CAUTION: Before you perform this procedure, see "Safety First—
For You and Your Computer."
NOTICE: Before disconnecting a device from the computer, wait 10 to 20
seconds after disconnecting the computer from its electrical outlet. Before
removing a component from the system board, verify that the standby power
light on the system board has turned off. To locate this light, see "System Board
Components" or the interior service label.
1
Enter system setup and ensure that the value for System Memory
matches the actual amount of memory installed in the computer.
Does the memory total correctly match the actual amount of memory
installed in the computer?