220-802 Question #522: Real Exam Question with Answer & Explanation

The correct answer is B: Bad Motherboard. When a PC shows no boot and no display despite the PSU fan spinning, the most likely hardware culprits are a faulty motherboard or a power supply that is not delivering correct voltages to system components.

Question

A technician encounters a PC where they can hear the power supply fan running, but the system is not booting up and there is no display. Which of the following are the MOST likely causes? (Select TWO).

Options

ABad PCI card
BBad Motherboard
CBad RAM
DBad boot.ini file
EBad Power Supply

Explanation

When a PC shows no boot and no display despite the PSU fan spinning, the most likely hardware culprits are a faulty motherboard or a power supply that is not delivering correct voltages to system components.

Common mistakes.

A. A bad PCI card may cause POST errors or specific subsystem failures but is unlikely to prevent all boot activity and display output entirely when the rest of the system has power.
C. While bad RAM can prevent POST and display output, it typically triggers audible beep codes from the system speaker, making the symptom profile less consistent with the described scenario than a PSU or motherboard failure.
D. The boot.ini file is an operating system loader file only relevant after hardware initialization completes; a missing or corrupt boot.ini cannot cause no-display symptoms that occur before POST.

Concept tested. No-POST hardware failure diagnosis - PSU and motherboard

Reference. https://learn.microsoft.com/en-us/troubleshoot/windows-client/performance/windows-boot-issues-troubleshooting

Community Discussion

No community discussion yet for this question.

Full 220-802 Practice