CompTIA A+ Core 1 (220-1001) — Question 150

A technician finishes building a custom gaming computer. When the system is turned on, however, all the fans spin and the LEDs light up on the motherboard, but the system does not POST and the monitor remains blank. Which of the following did the technician fail to connect to the motherboard?

Answer options

• A. SATA signal cable
• B. CPU power cable
• C. Power LED
• D. Motherboard power cable

Correct answer: A

Explanation

The correct answer is A because the SATA signal cable is necessary for the motherboard to communicate with storage devices, which can prevent POST if not connected. The CPU power cable (B) and motherboard power cable (D) are critical for system power, while the Power LED (C) is not essential for POST and would not cause the system to fail to boot.