Comprehensive Detailed Explanation with all CompTIA Server+ SK0-005 Study Guide References:If the fans are running at full speed, it may indicate that the CPU or system temperature is too high. This is often caused by a poorly attached or improperly seated heat sink, which prevents efficient heat dissipation. Reattaching the heat sink with proper thermal paste resolves the issue. * A. Replace the PSU:Not relevant to temperature control. * B. Reseat the video card:Would not affect fan speed unless a GPU temperature issue exists, which is not stated here. * C. Reseat the RAM:Unrelated to fan operation.