How To Fix An Operating System Wasn't Found & BCD Repair in Windows
2How To Fix An Operating System Wasn't Found & BCD Repair in Windows
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In this tutorial, I’ll show you how to fix the "An operating system wasn’t found" error and perform a BCD (Boot Configuration Data) repair in Windows. This issue can prevent your PC from booting up correctly, but following these steps will help you resolve it.
Issues addressed in this tutorial:
Fixing "An operating system wasn’t found" error
Repairing Boot Configuration Data (BCD)
Using Command Prompt to rebuild the BCD
Running Startup Repair via Windows Recovery Environment (WinRE)
Checking and repairing the MBR (Master Boot Record)
Verifying the boot order and system partitions
This works on Windows 11, Windows 10, and other versions of Windows.
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