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Question

Difficulty: MediumMotherboard, RAM, CPU, and Power Issues

A technician is troubleshooting a small-form-factor (SFF) desktop workstation that fails to display video upon powering on. The power LED lights up solid amber, internal cooling fans spin at high speed, and the system motherboard emits a repeating pattern of three short beeps. Which of the following troubleshooting actions should the technician perform first? (Select TWO.)

  1. Verify that all installed memory modules are properly seated and secured by their slot retention clips.Answer
  2. Remove all memory modules and test each stick individually in a single slot to isolate potential hardware defects.Answer
  3. C
    Boot the workstation using a USB recovery drive to repair corrupted operating system boot files.
  4. D
    Replace the installed memory modules with full-sized dual inline memory modules (DIMMs).

Answer

The technician should verify that the memory modules are fully seated and test the RAM modules individually in a single slot to isolate any defective hardware.
Beep codes occurring immediately after powering on indicate a hardware diagnostic failure detected by the system BIOS/UEFI prior to display initialization. Three short beeps generally point to a memory initialization or detection issue. Re-seating memory modules ensures proper contact with the bus, and testing RAM modules individually isolates whether a specific stick or slot is defective.

Step-by-Step Solution

1
Analyze system POST symptoms and beep codes
Identify that three short beeps prior to video initialization indicate a memory subsystem detection or validation failure during POST.
Motherboard beep codes provide pre-boot diagnostic signals indicating specific core hardware failures.
2
Check physical memory seating
Reseat the memory modules firmly until side retention tabs click into position.
Thermal expansion or physical movement can cause RAM modules to unseat slightly, disrupting contact pins.
3
Perform component isolation testing
Test each memory module one at a time in slot 1.
Isolating modules determines whether the system failure is caused by one bad RAM stick or a failed motherboard slot channel.

Key Concept

RAM POST Beep Code Isolation and Hardware Diagnostics
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Topics

Motherboard, RAM, CPU, and Power Issues

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