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Troubleshooting Your System 77
3
Turn on the system and attached peripherals and, as the system boots, note the messages on the
screen.
If the amount of system memory detected during POST does not match the amount of memory
installed, proceed to the next step.
If an error message appears, go to step 12.
4
Enter the System Setup program and check the system memory setting. See "Using the System Setup
Program" on page 23.
If the amount of memory installed matches the system memory setting, go to step 12.
5
Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
6
Open the system. See "Opening and Closing the System" on page 38.
7
Ensure that the memory banks are populated correctly. See "Memory Module Installation Guidelines"
on page 46.
If the memory modules are populated correctly, continue to the next step.
8
Reseat the memory modules in their sockets. See "Installing Memory Modules" on page 48.
9
Close the system. See "Opening and Closing the System" on page 38.
10
Reconnect the system to its electrical outlet, and turn on the system and attached peripherals.
11
Enter the System Setup program and check the system memory setting. See "Using the System Setup
Program" on page 23. If the amount of memory installed still does not match the system memory
setting, proceed to the next step.
12
Turn off the system and attached peripherals, and disconnect the system from its electrical outlet.
13
Open the system. See "Opening and Closing the System" on page 38.
14
If a diagnostic test or error message indicates a specific memory module as faulty, swap or replace the
module. Otherwise, swap the memory module in socket 1 with a module of the same type and capacity
that is known to be good. See "Installing Memory Modules" on page 48.
15
Close the system. See "Opening and Closing the System" on page 38.
16
Reconnect the system to its electrical outlet, and turn on the system and attached peripherals.
17
As the system boots, observe any error message that appears and the diagnostic indicators on the front
of the system.
18
If the memory problem is still indicated, repeat step 12 through step 17 for each memory module
installed until the faulty memory module is replaced.
If the problem persists after all memory modules have been checked, see "Getting Help" on page 95.