Dell PowerEdge R415 Owner's Manual page 158

4 Enter the System Setup program and check the system memory setting.
See "Memory Settings Screen" on page 61. Make any changes to the
memory settings, if needed.
If the memory settings match the installed memory but a problem is still
indicated, go to step 18.
5 Turn off the system, including any attached peripherals, and disconnect
the system from its electrical outlet.
6 Open the system. See "Opening the System" on page 82
7 If applicable, remove the cooling shroud. See "Removing the System Board
Shroud" on page 109.
8 Check the memory channels and ensure that they are populated correctly.
See "General Memory Module Installation Guidelines" on page 122.
9 Reseat the memory modules in their sockets. See "Installing Memory
Modules" on page 124.
10 If applicable, replace the cooling shroud. See "Installing the System Board
Shroud" on page 110.
11 Close the system. See "Closing the System" on page 83.
12 Reconnect the system to its electrical outlet and turn the system on,
including any attached peripherals.
13 Enter the System Setup program and check the system memory setting.
See "Memory Settings Screen" on page 61.
If the problem is not resolved, proceed with the next step.
14 If a diagnostic test or error message indicates a specific memory module as
faulty, swap or replace the module.
15 Turn off the system, including any attached peripherals, and disconnect
the system from its electrical outlet.
16 Open the system. See "Opening the System" on page 82.
17 If applicable, remove the cooling shroud. See "Removing the System Board
Shroud" on page 109.
18 To troubleshoot an unspecified faulty memory module, replace the
memory module in the first DIMM socket with a module of the same type
and capacity. See "Installing Memory Modules" on page 124.
19 Close the system. See "Closing the System" on page 83.
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Troubleshooting Your System