220-802 Question #576: Real Exam Question with Answer & Explanation

The correct answer is B: Replace the hard drive. A clicking or grinding noise from a hard drive combined with a 'no operating system found' error is a strong indicator of mechanical hard drive failure requiring immediate replacement.

Question

A user states they are hearing a clicking noise coming from the computer. There is a message on the screen saying no operating system found, and the computer then attempts to boot from PXE. Which of the following should the technician perform?

Options

ARemove the floppy disk
BReplace the hard drive
CReplace the NIC
DReplace the DVD-Rom

Explanation

A clicking or grinding noise from a hard drive combined with a 'no operating system found' error is a strong indicator of mechanical hard drive failure requiring immediate replacement.

Common mistakes.

A. A floppy disk in the drive would cause a 'non-system disk' error or simply be skipped; it would not produce clicking sounds.
C. A failing NIC would affect PXE boot functionality but would not produce clicking sounds or cause the primary hard drive to be undetectable.
D. A faulty DVD-ROM would prevent optical disc booting but would not produce hard drive clicking noises or make the OS undetectable.

Concept tested. Diagnosing hard drive mechanical failure symptoms

Reference. https://www.comptia.org/certifications/a

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