CompTIA A+ Core 1 (220-1201)Hardware and Network TroubleshootingHard
A technician is troubleshooting a desktop computer that experiences intermittent video loss. The monitor occasionally goes black for a few seconds, then returns to normal. This occurs randomly, not specifically under heavy load or during specific applications. The technician has already checked the monitor cable and confirmed it is secure. What is the MOST likely cause?
- AA loose or faulty graphics card (GPU) connection.
- BA failing CPU
- CInsufficient RAM
- DAn outdated monitor driver
Show answer & explanationAnswer & explanation
Correct answer: A. A loose or faulty graphics card (GPU) connection.
Intermittent video loss, where the screen goes black then returns to normal, especially when not tied to load, often indicates a loose or faulty connection of the graphics card itself. Vibrations or slight movements can cause a temporary disconnection, leading to video signal loss. A failing GPU could also cause this, but a connection issue is a more common 'intermittent' problem.
Why the other options are wrong
- B. A failing CPU would typically cause system crashes, freezes, or boot issues, not intermittent video loss while the system continues to run.
- C. Insufficient RAM would cause system slowdowns, crashes, or specific errors, but not typically intermittent video loss where the screen goes black and then recovers.
- D. An outdated monitor driver might cause display issues like incorrect resolutions or color problems, but not usually random, brief black screens that self-correct.
Intermittent Video Loss
A display issue where the screen briefly goes black or loses signal, then returns to normal, often caused by loose connections or failing video hardware.
- Can be random or triggered by slight movement/vibration.
- Often related to the graphics card, its connection, or the display cable.
- Symptoms include flickering, brief black screens, or signal drops.
Memory trick: When the screen blinks out randomly, check the GPU's seat or its cable.