220-1102 · Question #810
A client recently upgraded their Windows 10 machine to Windows 11. The client reports the following message displays when turning the computer on: "Error loading operating system." Which of the…
The correct answer is B. Use the automated startup recovery. When an 'Error loading operating system' message appears after a Windows upgrade, the Boot Configuration Data (BCD) or Master Boot Record (MBR) may have become corrupted or misconfigured during the upgrade process. The automated startup recovery (Windows Recovery Environment /…
Question
A client recently upgraded their Windows 10 machine to Windows 11. The client reports the following message displays when turning the computer on: "Error loading operating system." Which of the following should a technician do first to troubleshoot this issue?
Options
- ADisable the Secure Boot feature.
- BUse the automated startup recovery.
- CFormat the drive.
- DResize the boot partition.
How the community answered
(53 responses)- A4% (2)
- B72% (38)
- C17% (9)
- D8% (4)
Explanation
When an 'Error loading operating system' message appears after a Windows upgrade, the Boot Configuration Data (BCD) or Master Boot Record (MBR) may have become corrupted or misconfigured during the upgrade process. The automated startup recovery (Windows Recovery Environment / Startup Repair) is the correct first step because it is non-destructive and specifically designed to detect and fix boot-related issues automatically. It should always be attempted before more drastic actions. Option A (disabling Secure Boot) could worsen security without addressing the root cause. Option C (formatting the drive) is destructive and should be a last resort. Option D (resizing the boot partition) is not indicated and could cause further damage.
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