220-802 Question #1032: Real Exam Question with Answer & Explanation

The correct answer is A: Overheating. Modern motherboards include thermal protection mechanisms that automatically shut down the system when CPU temperatures exceed safe thresholds. If the CPU fan has failed, there is no active cooling on the processor. Within minutes of booting, the CPU temperature rises to a critic

Question

A user's computer consistently shuts down several minutes after booting. When the technician reboots the computer, a message stating "CPU fan failure" appears. Which of the following is the MOST likely reason the computer shuts down?

Options

AOverheating
BPower supply failure
CFaulty CPU
DHigh humidity

Explanation

Modern motherboards include thermal protection mechanisms that automatically shut down the system when CPU temperatures exceed safe thresholds. If the CPU fan has failed, there is no active cooling on the processor. Within minutes of booting, the CPU temperature rises to a critical level, triggering an emergency shutdown to prevent permanent hardware damage. The 'CPU fan failure' POST message confirms the fan is not spinning. This is a direct cause-and-effect: no fan → no cooling → overheating → protective shutdown. A power supply failure would cause random shutdowns unrelated to temperature. A faulty CPU would more likely cause errors or crashes. High humidity could cause electrical issues but not a clean thermal shutdown with a fan failure warning.

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