220-802 Question #445: Real Exam Question with Answer & Explanation

The correct answer is B: Invalid boot disk. An 'Invalid boot disk' or 'Invalid system disk' error appears during POST when the BIOS cannot locate a valid bootable partition or operating system on the detected drives. This is a well-known Windows startup failure symptom caused by a corrupted MBR, missing boot files, or inco

Question

What is a common symptom of a problem starting up the Windows 7 operating system?

Options

ASpontaneous shutdown/restart
BInvalid boot disk
CWinRE won't start
DThe optical disc failed
EEmergency repair disk doesn't boot
FREGSVR32 has failed

Explanation

An 'Invalid boot disk' or 'Invalid system disk' error appears during POST when the BIOS cannot locate a valid bootable partition or operating system on the detected drives. This is a well-known Windows startup failure symptom caused by a corrupted MBR, missing boot files, or incorrect BIOS boot order. Spontaneous shutdown/restart (A) can occur at any time, not just startup. WinRE not starting (C) is a recovery tool issue. Optical disc failure (D) and emergency repair disk failure (E) are media issues. REGSVR32 failure (F) is a DLL registration issue that occurs within Windows, not at startup.

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