220-1101 · Question #392
A user calls the help desk about a 4K monitor that will not output an image from a desktop. The monitor was working previously but now shows a black screen with a message stating a signal is not detec
The correct answer is A. Check the version of the HDMI cable. B. Check the input source.. Before replacing hardware or making system changes, the technician should first check the simplest and most reversible possibilities. Checking the input source (B) ensures the monitor is set to the correct input (HDMI vs. DVI), which is a one-button fix. Checking the HDMI cable v
Question
A user calls the help desk about a 4K monitor that will not output an image from a desktop. The monitor was working previously but now shows a black screen with a message stating a signal is not detected. The desktop is connected via HDMI, and the monitor has an empty DVI port. Which of the following steps should the technician perform FIRST? (Choose two.)
Options
- ACheck the version of the HDMI cable.
- BCheck the input source.
- CSet up the desktop for DVI.
- DReplace the HDMI cable.
- EInstall OS updates.
- FInitiate a system restore.
How the community answered
(22 responses)- A86% (19)
- C9% (2)
- E5% (1)
Explanation
Before replacing hardware or making system changes, the technician should first check the simplest and most reversible possibilities. Checking the input source (B) ensures the monitor is set to the correct input (HDMI vs. DVI), which is a one-button fix. Checking the HDMI cable version (A) is important because 4K resolution requires at least HDMI 2.0; an older HDMI 1.x cable may not carry a 4K signal, causing a 'no signal' message. These two checks address the most likely causes without any hardware replacement or OS changes, following the CompTIA troubleshooting methodology of identifying the obvious first.
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