220-1101 Hardware Practice Question

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✗

  Update the BIOS to the latest version.

  Why it's wrong here

  Updating the BIOS would not resolve the immediate hardware-level memory training failure indicated by the long-beep POST code, as the motherboard already supports the approved DDR4 modules per the manual. This option is tempting because a BIOS update can fix compatibility issues with newer memory ranks or timings, and would be correct if the modules were a later revision not supported by the original firmware. However, the verified approval and correct slot placement point to a physical seating or contact problem, not a firmware mismatch.

• ✗

  Reseat the CPU.

  Why it's wrong here

  Reseating the CPU will not resolve a memory-related POST beep code because the beep pattern indicates a failure during memory initialization, not CPU initialization. A poorly seated CPU typically prevents the system from generating any beep code at all, as the CPU is required to execute POST instructions; you would likely see a blank screen and no beeps, or a CPU-specific error indication from the motherboard's diagnostic LEDs. While the memory controller is integrated into the CPU on many modern processors, this beep code specifically points to the RAM modules or their electrical connection to the memory slots, so reseating the CPU is relevant only if the CPU itself were damaged or not making contact, which would produce different symptoms.

• ✓

  Test each memory module individually.

  Why this is correct

  Testing each memory module individually is the logical first step because it isolates whether the problem is a defective module, a faulty slot, or a compatibility issue. By installing one stick at a time in the first DIMM slot and attempting to POST, you can determine if the system boots with one module but not the other, directly identifying the bad component. If both modules work individually but fail together, the issue is likely due to mismatched modules or a channel-interleaving problem rather than a failed part. This method specifically addresses the memory beep code that the technician is hearing, and it avoids unnecessarily replacing working components.

• ✗

  Replace the power supply.

  Why it's wrong here

  Replacing the power supply is incorrect because the beep code pattern is a POST diagnostic that points to memory initialization, not power delivery. A failing or insufficient PSU would more likely cause the system to fail to power on, randomly reboot under load, or generate a different beep pattern related to voltage faults. The upgrade only added memory modules, which consume relatively little power compared to components like the GPU, so a PSU that was previously stable is unlikely to be overwhelmed by two DIMMs. Swapping the PSU would not fix the memory-related beep and would introduce new variables into the troubleshooting process, delaying the correct diagnosis.

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