Fix Boot Device Not Found error in Windows 11/10

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When you turn on your working computer, which was working correctly, and run into a message — Boot Device Not Found, and then you are probable to break into a panic. Along with the error bulletin, y'all may too see a message asking you to – Please install an operating system on your hard deejay, Hard disk<xxx>. You volition also exist asked to press F2 to initiate System Diagnostics.

What does the Boot device not found error mean?

When you install Windows on a drive, it becomes the boot device. When a computer boots, the BIOS or UEFI looks for the Os installed on that drive, and continues the process further. You lot tin read about how Windows boots here. Coming back to the error lawmaking, when the BIOS or UEFI doesn't find any device from which it can kicking, it gives the error saying the kick device cannot be found.

Kicking Device Not Found

These are the troubleshooting tips yous can follow to overcome the Boot Device Not Constitute error. Information technology could exist a physical result or a software issue.

Bank check connection with the boot drive
Alter Kick Club
Set up Kick Record from Recovery
Check if Primary Partition is active

Make sure to prepare a bootable Windows USB drive. The last two option requires you to boot into Advanced Recovery Mode to execute commands.

1] Check connexion with the boot drive

If you are using a custom PC that comes with a cabinet, we suggest you open it. Remove whatsoever connected power supply and check on the wires. Drives are connected with the motherboard through a cable. Bank check if both ends are continued well, and it's not lost. Information technology'southward a expert idea to detach and reattach and come across if the kicking works.

If you are using a laptop. You accept ii options. If you have the skills which help you open up the laptop, and check for loose connection, go ahead. If non, take it to a service center if none of the other tips work.

ii] Change Kicking Order

When the computer boots, the BIOS or UEFI looks at the boot society. The society tells were to first look for a boot bulldoze. If for some reason, a USB is continued to your calculator, and the starting time boot device is USB, and so yous have sorted your problem. Y'all can remove the USB and boot or get into the BIOS and change the Kicking order.

If you are all good on the hardware, let's endeavour to fix it through the software. Use the bootable USB drive, boot into Advanced Recovery Mode, and open the Command Prompt.

iii] Fix Kick Record Non Establish from Recovery

In the Command Prompt, we will use the bootrec control to rebuild BCD or otherwise known asBoot Configuration Data. It contains kicking configuration parameters on how to start your Windows. If it is corrupted, so BIOS volition not exist able to observe the boot bulldoze. You can use bootrec /rebuildbcd .

Read our detailed post on how to Repair Master Boot Tape, where nosotros use the following command options:

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

Once done, when you boot the computer, it will detect the kick drive, and load Windows Bone.

iv] Check if Main Partition is agile

On a hard drive which has multiple partitions, the one where you lot install Windows is called a Primary Partition. Apart from existence Chief, information technology needs to be an agile sectionalization. Y'all need to use the DiskPart tool to activate the partitioning. Since we cannot admission the GUI, we volition execute it from the Command Prompt.

DiskPart list disk  select disk 0  listing volume  select book X (where ten is the volume where Windows is installed)  active  exit

Once washed, the primary bulldoze will exist agile, and you will be able to boot into the computer without any problem. Make sure to select the right volume; else y'all will have to come back, and change it again.

Hope this helped.

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Ashish is a veteran Windows, and Xbox user who excels in writing tips, tricks, and features on information technology to ameliorate your mean solar day to day experience with your devices.