CompTIA A+ Question A-28

A technician is not able to boot to Windows OS. A “Non-bootable device found” message appears on the screen when the computer restarts. Which of the following is the MOST possible cause of the error message?

A. MBR is corrupt on the HDD.
B. HDD is set to Cable Select.
C. The operating system is corrupt.
D. A bootable HDD is not recognized in the BIOS.

Correct Answer: D