nerdexam
CompTIA

220-1201 · Question #186

An employee's screen keeps flashing. Sometimes the picture goes out and comes back. The employee checks the power cord and confirms the device is plugged in fully. Which of the following should a…

The correct answer is A. Loose video cable. Intermittent display issues, such as a screen flashing on and off, are most commonly caused by a loose or faulty video cable connection. If the power cable is confirmed secure, the next logical step is to check the video (data) cable between the monitor and the computer.

Submitted by satoshi_tk· Mar 30, 2026

Question

An employee's screen keeps flashing. Sometimes the picture goes out and comes back. The employee checks the power cord and confirms the device is plugged in fully. Which of the following should a technician check for first?

Options

  • ALoose video cable
  • BFailing graphics card
  • CConflicting drivers
  • DSwollen motherboard capacitor

How the community answered

(22 responses)
  • A
    68% (15)
  • B
    18% (4)
  • C
    5% (1)
  • D
    9% (2)

Explanation

Intermittent display issues, such as a screen flashing on and off, are most commonly caused by a loose or faulty video cable connection. If the power cable is confirmed secure, the next logical step is to check the video (data) cable between the monitor and the computer.

Topics

#Display troubleshooting#Video cable#Hardware diagnostics

Community Discussion

No community discussion yet for this question.

Full 220-1201 Practice