CompTIA A+ Core 2 (220-1202) — Question 4

The screen of a previously working computer repeatedly displays an OS Not Found error message when the computer is started. Only a USB drive, a keyboard, and a mouse are plugged into the computer. Which of the following should a technician do first?

Answer options

• A. Run data recovery tools on the disk.
• B. Partition the disk using the GPT format.
• C. Check boot options.
• D. Switch from UEFI to BIOS.

Correct answer: C

Explanation

The correct first step is to check the boot options, as the OS Not Found error often indicates that the system is not able to locate a bootable device. Running recovery tools or partitioning the disk may not be effective if the boot settings are incorrect, and switching from UEFI to BIOS could complicate the situation further without first verifying the current boot configuration.