How to get windows 11 boot manager back? After failed installation of window pro

Recovering the Windows 11 Boot Manager After a Failed Upgrade to Windows 11 Pro

Encountering issues during an operating system upgrade can be frustrating, especially when your system fails to boot properly afterward. If you’ve recently attempted to install Windows 11 Pro and find that the Windows Boot Manager has disappeared, you’re not alone. This guide provides step-by-step instructions to help you restore the Windows 11 Boot Manager and get your PC back up and running.

Understanding the Issue

During a failed Windows 11 Pro installation, several problems can arise. Common symptoms include:

The system failing to load the operating system.
The boot menu not appearing or being inaccessible.
The computer displaying error messages or a blank screen at startup.
The drive seems unrecognized or the OS appears to have “vanished.”

These issues typically stem from incomplete or corrupted installation files, misconfigured boot records, or partition issues.

Steps to Recover the Windows 11 Boot Manager

Prepare Bootable Media
To troubleshoot and repair the boot process, you’ll need a Windows installation or recovery media:
Download the Windows 11 Media Creation Tool from the official Microsoft website.
Use it to create a bootable USB drive or DVD.
Boot into Windows Recovery Environment
Insert the bootable media into your PC.
Restart your computer and boot from the USB/DVD (you may need to change the boot order in BIOS/UEFI settings).
Select your language preferences, then click “Next.”
Click “Repair your computer” at the bottom left corner.
Access Advanced Startup Options
Navigate to “Troubleshoot” > “Advanced options.”
Choose “Command Prompt” to access the recovery command line.
Rebuild the Boot Configuration Data (BCD)
In Command Prompt, execute the following commands:

bash bootrec /fixmbr bootrec /fixboot bootrec /scanos bootrec /rebuildbcd

These commands attempt to repair the Master Boot Record, write a new boot sector, scan for Windows installations, and rebuild the Boot Configuration Data.
Check and Repair Disk Integrity
To ensure disk health, run:

bash chkdsk /r /f C:

Replace “C:” with the appropriate drive letter if your Windows installation is on a different partition.