138 Troubleshooting Your System6 Open the system. See "Opening the System" on page 64.7 Remove the cooling shroud. See "Removing the Cooling Shroud" onpage 66.8 Check the memory channels and ensure that they are populated correctly.See "General Memory Module Installation Guidelines" on page 81.9 Reseat the memory modules in their sockets. See "Installing MemoryModules" on page 85.10 Replace the cooling shroud. See "Installing the Cooling Shroud" onpage 67.11 Close the system. See "Closing the System" on page 65.12 Reconnect the system to its electrical outlet, and turn on the systemand attached peripherals.13 Enter the System Setup program and check the system memory setting.See "Memory Settings Screen" on page 43.If the problem is not resolved, proceed with the next step.14 Turn off the system and attached peripherals, and disconnect the systemfrom the power source.15 Open the system. See "Opening the System" on page 64.16 If a diagnostic test or error message indicates a specific memory moduleas faulty, swap or replace the module.17 To troubleshoot an unspecified faulty memory module, replace thememory module in the first DIMM socket with a module of the same typeand capacity. See "Installing Memory Modules" on page 85.18 Close the system. See "Closing the System" on page 65.19 Reconnect the system to its electrical outlet, and turn on the system andattached peripherals.20 As the system boots, observe any error message that appears and thediagnostic indicators on the front of the system.21 If the memory problem is still indicated, repeat step 14 through step 20 foreach memory module installed.If the problem persists after all memory modules have been checked,see "Getting Help" on page 157.
