A technician installs an external camera on a user's laptop. When loading meeting software, the video preview shows a blank screen. What should the technician do next?

The correct answer is A. Select the correct camera source. Most meeting or conferencing applications default to the built-in laptop camera unless manually changed. When an external camera is connected, the software may continue to use the default device, resulting in a blank preview, especially if the internal camera is disabled…

Submitted by obi.ng· Mar 30, 2026Hardware and network troubleshooting

Question

Options

ASelect the correct camera source.
BReplace the camera.
CUpdate the camera software.
DCheck the camera cable.

How the community answered

(36 responses)

A
61% (22)
B
6% (2)
C
11% (4)
D
22% (8)

Explanation

Most meeting or conferencing applications default to the built-in laptop camera unless manually changed. When an external camera is connected, the software may continue to use the default device, resulting in a blank preview, especially if the internal camera is disabled, covered, or malfunctioning. CompTIA A+ stresses verifying correct device selection when peripherals are Selecting the correct camera source is a quick, non-invasive test that resolves the issue in the majority of cases. The technician should open the application's video settings and choose the external webcam from the camera dropdown menu.

Topics

#external camera#USB device#camera source#video conferencing

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