How to Fix Windows Bootloader: "No Boot Device Found" Error Without Reinstalling Windows
Are you stuck with the "No Boot Device Found" or "Operating System Not Found" error? Don't panic! You don't need to reinstall Windows and lose your data. In this tutorial, I will show you how to repair a corrupted Windows Bootloader (UEFI/GPT) using a Windows Installation USB and Command Prompt.
In this video, we will dive into the advanced recovery environment to manually recreate the EFI partition and use the BCDBOOT command to restore your system's ability to boot.
🛠️ What you will need:
A Windows Installation USB (Media Creation Tool).
A bit of patience!
📝 Steps covered in this video:
Booting from the Windows Installation USB.
Accessing Command Prompt via "Repair your computer" / "Troubleshoot".
Using Diskpart to identify your hard drive and the EFI partition.
Formatting the FAT32 partition to ensure a clean slate.
Using the BCDBOOT command with the /f all flag to recreate the boot configuration files.
Restarting and booting back into Windows.
💻 Commands used in this video:
diskpart
list disk
select disk X (Replace X with your disk number)
list volume
select volume Y (Replace Y with your EFI/FAT32 volume number)
format fs=fat32 quick
assign letter=S (Or any available letter)
bcdboot C:\Windows /s S: /f ALL
⚠️ Disclaimer: This process involves modifying system partitions. Please follow the steps carefully. It is always recommended to back up your important data before performing system repairs.
☢️ CRITICAL WARNING: PROCEED AT YOUR OWN RISK ☢️
This video involves advanced system modifications and the use of the Diskpart format command. Formatting the wrong partition will lead to PERMANENT DATA LOSS.
I am NOT responsible for any data loss, hardware damage, or bricked systems resulting from the use of this tutorial.
BACKUP YOUR DATA before attempting these steps if you have access to your files.
If you are not comfortable using the Command Line Interface (CLI), please seek professional technical support.
Watch the entire video carefully before performing any actions on your computer. One typo can be the difference between a fixed PC and a wiped hard drive.
Timestamps:
00:00 Check the hard drive
00:51 Fix errors
03:00 End
If this video helped you save your Windows installation, please give it a LIKE and SUBSCRIBE for more tech tutorials!
#Windows11 #Windows1125H2 #NoBootDeviceFound #WindowsBootloader #FixWindowsBoot #WindowsRepair #StartupRepair #RebuildBCD #UEFI #Bootrec #WindowsTroubleshooting #NoBootableDevice #FixWindowsError #Windows112025 #TechTutorial
#Windows11Pro #WindowsInsider #Win11 #MicrosoftWindows #WindowsUpdate #25H2Update #PCMaintenance #ITSupport #ComputerRepair #SoftwareFix #BlueScreen #BCDRepair #BootError #WindowsTips #TechSupport #OperatingSystem #TechGuide #StepByStep #DIYRepair #LaptopFix #DesktopFix #Diskpart #MasterBootRecord #GUIDPartitionTable #SystemRecovery #WinPE #TroubleshootWindows #BootFailure #FixBoot #WindowsHelp