Which of the following must be done when the display turns blue or grey?
Result:
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Option 1: "The hard drive must be replaced and data should be recovered."
Explanation: The text states that when the display shows blue or grey, it indicates that the hard drive must be checked. This implies that there may be an issue with the hard drive, which could necessitate its replacement and data recovery. The phrase 'must be checked' suggests that action regarding the hard drive is required, aligning with the correct answer.
Option 2: "Data must be recovered and the system must be restarted."
Explanation: While data recovery may be relevant, the text does not mention restarting the system as a necessary action when the display turns blue or grey. This option introduces an action (restarting) that is not supported by the text, making it incorrect.
Option 3: "An external monitor must be plugged in."
Explanation: The text specifies that connecting an external monitor is only necessary when the Mac is powered on but shows a black screen. Therefore, this option does not relate to the blue or grey display situation and is incorrect.
Option 4: "The RAM must be checked."
Explanation: The text indicates that RAM should be checked only when there is a blink or beep in the LED, not when the display is blue or grey. This makes the option irrelevant to the context of the question, leading to its incorrectness.
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