220-1102 Practice Question: That their Windows 10 laptop will not boot and…

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✓

  Boot from the USB, go to Troubleshoot > Advanced Options > Command Prompt, and run 'bootrec /rebuildbcd' and 'bootrec /fixmbr'.

  Why this is correct

  This is the correct approach because the 'bootrec /fixmbr' command writes a new Master Boot Record (MBR) to the system partition, which is essential if the MBR is corrupted or missing. Subsequently, 'bootrec /rebuildbcd' scans for Windows installations and allows them to be added to the Boot Configuration Data (BCD) store. This combination directly repairs the foundational boot components necessary for the Windows Boot Manager to load, effectively resolving the 'Bootmgr is missing' error.

• ✗

  Boot from the USB and select 'Repair your computer' > 'Startup Repair'.

  Why it's wrong here

  While Startup Repair is an automated diagnostic tool designed to fix common boot problems, it often falls short when the Master Boot Record (MBR) or Boot Configuration Data (BCD) is severely corrupted or completely missing. It attempts to fix issues by scanning for missing or corrupted system files and incorrect boot sector entries, but it may not always have the specific logic or capability to fully reconstruct a missing Boot Manager entry or repair a deeply corrupted MBR, making the targeted 'bootrec' commands more effective.

• ✗

  Boot from the USB and run 'sfc /scannow' from the Command Prompt.

  Why it's wrong here

  The 'sfc /scannow' command, or System File Checker, is designed to scan and verify the integrity of protected Windows system files and replace any corrupted or modified versions with correct ones. However, this utility operates on the core operating system files themselves, not on the Master Boot Record (MBR), the boot sector, or the Boot Configuration Data (BCD) store. Therefore, it cannot address issues related to the initial boot process that occur before the operating system even begins to load, making it ineffective for a 'Bootmgr is missing' error.

• ✗

  Boot from the USB and perform a system restore to a previous point.

  Why it's wrong here

  Performing a System Restore reverts system files, installed applications, and registry settings to a previous state captured in a restore point. While this might resolve issues caused by recent software installations or driver updates that inadvertently corrupted boot-related files, it is not the most direct or reliable method for a 'Bootmgr is missing' error. System Restore primarily targets the operating system's configuration and may not fully repair a severely damaged Master Boot Record (MBR) or a completely absent Boot Configuration Data (BCD) entry, which are the root causes of this specific error.

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