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Zorluk: KolayTroubleshooting Methodology

A technician is troubleshooting a desktop computer that powers on, but no image appears on the monitor screen. The power indicator on the system unit is illuminated solid green. Which of the following initial actions should the technician take to help establish a theory of probable cause? (Select TWO.)

  1. Verify that the video cable is plugged securely into the dedicated graphics card rather than the motherboard port.Cevap
  2. Test the monitor with a known-good video cable and display source to isolate the hardware.Cevap
  3. C
    Flash the system BIOS to the newest version to ensure display adapter compatibility.
  4. D
    Document the final solution and complete the work order ticket for the user.

Cevap

The technician should verify that the video cable is plugged securely into the dedicated graphics card rather than the motherboard port, and test the monitor with a known-good video cable and display source to isolate the hardware.
Verifying basic cable orientation (ensuring connection to the discrete GPU rather than integrated video) questions the obvious, which is a key component of establishing a theory of probable cause. Additionally, swapping in known-good display cables or test monitors isolates whether the problem lies with the display hardware or the PC output.

Adım Adım Çözüm

1
Identify the troubleshooting methodology step required by the scenario.
The technician has gathered initial symptoms (system powers on, blank display) and needs to establish a theory of probable cause.
Step 2 of the CompTIA troubleshooting methodology requires questioning the obvious and isolating components to determine why no video signal is present.
2
Evaluate candidate actions that fit Step 2 (Establish a theory of probable cause).
Checking simple physical connections (correct GPU port) and component substitution (known-good monitor/cable testing) are foundational actions for establishing a cause.
Questioning the obvious prevents unnecessary complex repairs when simple cabling or port mistakes occur.

Anahtar Kavram

CompTIA Troubleshooting Methodology - Establishing a Theory of Probable Cause
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Troubleshooting Methodology

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