CompTIA
220-802 · Question #991
220-802 Question #991: Real Exam Question with Answer & Explanation
The correct answer is A: Power cable. When a monitor does not power on at all, the very first physical check must be the power cable, as a loose or disconnected power cable is the simplest and most common reason a monitor shows no sign of life.
Question
A user has called in a helpdesk ticket about their monitor not powering on but their PC does. Which of the following would be the FIRST thing the technician would check?
Options
- APower cable
- BPower settings
- CVideo cable
- DVideo settings
Explanation
When a monitor does not power on at all, the very first physical check must be the power cable, as a loose or disconnected power cable is the simplest and most common reason a monitor shows no sign of life.
Common mistakes.
- B. Power settings control sleep or display timeout behavior in the OS; they would not prevent the monitor from receiving power or showing a standby indicator.
- C. The video cable carries the display signal from the PC to the monitor; a missing or damaged video cable would cause no image but the monitor would still power on and show a 'no signal' message.
- D. Video settings are software configurations that affect output resolution or refresh rate and cannot prevent a monitor from powering on.
Concept tested. Basic hardware troubleshooting - power verification first
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