Question

Difficulty: MediumMotherboard, RAM, CPU, and Power Issues

A desktop workstation fails to display video upon powering on. The system power fans spin continuously, but the motherboard speaker emits three long, repeating beep codes. Which TWO of the following initial troubleshooting steps should the technician perform to isolate the cause of this failure? (Select TWO.)

  1. Reseat the installed RAM modules to ensure proper electrical contact in the motherboard DIMM slots.Answer
  2. Boot the system using a single known-good memory module installed in the primary DIMM slot.Answer
  3. C
    Attempt to boot into the operating system using an external recovery drive to repair system boot files.
  4. D
    Replace the desktop memory modules with SO-DIMM modules to fit standard desktop DIMM slots.

Answer

The technician should reseat the installed RAM modules to ensure proper physical contact and attempt to boot the PC using a single known-good memory module in the primary slot to isolate memory stick or motherboard slot failure.
Three repeating long POST beep codes indicate a memory initialization failure. Reseating memory modules ensures proper connection with slot pins, while booting with a single known-good RAM module in the primary slot isolates whether a particular RAM module or slot is faulty.

Step-by-Step Solution

1
Analyze POST beep symptoms
Three repeating long beep codes during startup indicate a failure in memory detection or memory initialization prior to video initialization.
Identifying POST hardware error codes narrows down the fault to the system memory subsystem.
2
Perform physical memory isolation and verification
Reseating modules verifies seating, while testing one known-good module systematically identifies if a specific module or channel slot has failed.
Isolating RAM components pinpoints individual module or slot defects efficiently.

Key Concept

RAM POST Diagnostics and Component Isolation
Estimated Time:1m 15s
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