CompTIA A+ Core 1 (220-1201) — Question 11

A technician has built a new computer. On the initial startup, the computer passes POST but will not turn on the operating system. Which of the following components has failed?

Answer options

• A. Audio card
• B. CPU
• C. Power supply
• D. HDD

Correct answer: D

Explanation

The hard disk drive (HDD) is essential for loading the operating system. While the system can pass POST, a malfunctioning HDD would prevent the OS from starting. The audio card, CPU, and power supply are less likely to be the cause since they either support basic functionality or are not directly responsible for OS loading.