A curious computer user is ready to check out a CRT video problem with a computer system. Because of safety concerns, which one of the following procedures should be carried out only after receiving specialized technical training?
A) Turning the monitor power off and pushing the power cord plug firmly into its socket on the back of the monitor
B) Unplugging the monitor, removing its case, and probing various components
C) Unplugging the PC?s power cord from the wall
D) Turning the computer off before removing the computer cover
B
Computer Science & Information Technology
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