单选题A technician is troubleshooting a monitor displaying a blank screen and the power indicator light ison. Which of the following should the technician do next?（）ATest the computer with a known-good monitor.BCheck if the monitor is still covered under the manufacturer’s warranty.CReplace the monitor’s power cord with a known-good power cord.DSwap out the computer’s video card.
单选题
A technician is troubleshooting a monitor displaying a blank screen and the power indicator light ison. Which of the following should the technician do next?（）
A
Test the computer with a known-good monitor.
B
Check if the monitor is still covered under the manufacturer’s warranty.
C
Replace the monitor’s power cord with a known-good power cord.
D
Swap out the computer’s video card.
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