Dell NM176 owner manual 109

Action

CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. Before performing any procedure, see your Product Information Guide for complete information about safety precautions, working inside the computer and protecting against electrostatic discharge.

1If the system is operational, run the appropriate online diagnostic test. See "Using Dell PowerEdge Diagnostics" on page 117.

If diagnostics indicates a fault, follow the corrective action(s) provided by the diagnostic program. If the problem is not resolved or if the system is not operational, proceed to step 2.

2Turn off the system and attached peripherals, unplug the system from the power source and press the power button, and reconnect the system to power.

3Turn 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.

4Enter the System Setup program and check the system memory setting. See "Using the System Setup Program" on page 35.

If the amount of memory installed matches the system memory setting, go to step 12.

5Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.

6Open the system. See "Opening the System" on page 54.

7Ensure that the memory banks are populated correctly. See "Memory Module Installation Guidelines" on page 81.

If the memory modules are populated correctly, continue to the next step.

8Reseat the memory modules in their sockets. See "Installing Memory Modules" on page 82.

9Close the system. See "Closing the System" on page 55.

Troubleshooting Your System

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