Windows 10 and 11 Wont Boot, How To Fix UEFI Partition

Summary

The video demonstrates how to rebuild a damaged UEFI boot partition on a Windows 10 or 11 computer. The method applies only to UEFI/GPT systems, not MBR installations.

A bootloader can become corrupted after a problematic update, malware infection, or drive failure. The presenter also recreates a boot failure by changing BCD settings, then repairs it to demonstrate the process.

Repair Guide

1. Back up your data first. The repair involves formatting the UEFI system partition. Selecting the wrong partition could cause serious data or boot problems. If Windows will not start, the presenter recommends using an offline boot tool to back up your files.
2. Prepare Windows recovery media. Use Microsoft’s Media Creation Tool to create a Windows installation USB drive; the presenter recommends a drive of at least 8 GB. Boot from it, select Repair your computer, then open Troubleshoot → Command Prompt. Startup Repair is mentioned as an option to try, though the video focuses on a manual repair.
3. Find the UEFI partition. In Command Prompt, use DiskPart to list disks and volumes. Identify the small, typically 100 MB FAT32 volume without a drive letter, select it, and assign it a temporary letter, such as V:.
4. Confirm the Windows drive letter. Windows may not be on C: in the recovery environment. Check the available drives and locate the one containing the Windows folder.
5. Rebuild the boot files. The demonstration formats the selected UEFI partition as FAT32, then uses BCDBoot to recreate the boot files. The example assumes Windows is on C: and the UEFI partition is V::

text format V: /fs:fat32 bcdboot C:\Windows /s V: /f UEFI

1. Restart and check whether Windows boots. The presenter verifies that the EFI boot folders have been recreated before restarting.

Important Limitations

• Formatting erases the contents of the selected partition. Carefully verify both the disk and the FAT32 volume before proceeding.
• The rebuilt BCD is described as a basic configuration. The presenter warns that it may remove access to the Windows Recovery Console and will not automatically restore entries for other Windows installations or Linux in a dual-boot setup.
• The video suggests that Windows Setup’s upgrade process may restore recovery functionality, but says this can leave an extra recovery partition.

Source

The video’s presenter and narrator is from CyberCPU Tech. The tutorial directs viewers to Microsoft’s official site for the Windows Media Creation Tool.