Boot Device Not Found? Follow to Fix 'No Bootable Devices Found' Error

Startup errors are not fun, yet they are one of the most prevalent errors that users encounter. Of course, not all startup issues are the same. Some errors, such as "boot device not found" can be problematic or indicate that you need to tweak your setup. An error like this does not imply that your computer has been entirely compromised or that your hard drive has been erased. Nonetheless, being unable to locate a boot drive is a problem that will prevent you from using your computer until the error is resolved.

Next, we'll show you how to repair the no-bootable device error on this page.

How to Fix No Bootable Devices Found

Nothing is more provoking than being in the middle of an important task, and your computer informs you that there is an error when you turn it on. This usually seems to happen at the worst possible time, such as when you're on a work deadline, need to complete a school project, or need some good retail therapy.

Relax if the 'No Bootable Devices Found' error pops up on your home, school, or office computer. All you need is to figure out what type of your system disk is - MBR or GPT. Then, follow the respective method to get of this issue.

Follow to learn how to fix your computer with the same error here on your own. Also, don't forget to share this guide to help more people around you online:

Guide 1. Fix 'No Bootable Devices Found' on GPT Disk

If your operating system disk has the GPT partition style, you can directly try the following methods one by one to eliminate the error on your PC.

Method 1. Check Your BIOS Settings and Boot Order

An improper boot sequence may cause your computer to boot from an unbootable hard disk, resulting in the "no bootable devices found" error message. As a result, ensure that your system hard disk is in the first position in the boot order.

To do so, follow the steps outlined below:

Step 1. First, "Reboot" your PC and then press (Del/F2/F10…) to enter into BIOS mode.

Step 2. Using the right arrow keys on your keyboard, navigate to the "Boot" tab. Furthermore, place your system hard drive at the top of the boot order list.

Step 3. Use the arrow key to select the GPT os disk as the boot drive and save the changes to reboot the PC. 

Then, wait for the computer to boot up. If the system logo shows up, congratulations. If nothing appears but the error, don't worry. Continue to try the next method.

Method 2. Fix UEFI Boot Disk with a Windows Bootable Repair Disk

When the UEFI boot disk contains some internal error, or the system can not load boot information from the GPT OS disk, you'll need a bootable repair disk for help. EaseUS Partition Master is capable of helping you create a bootable USB so as to reboot the malfunctioning computer and repair the UEFI boot volume.

Here is how to do so:

Step 1. Start EaseUS Partition Master after connecting the external drive/USB to your computer, go to "Bootable Media," and click "Create bootable media."

Step 2. Select an available USB Drive or CD/DVD and click "Create." You can also burn the Windows ISO file to the storage media.

Step 3. Connect the created bootable drive to the new computer and reboot the computer by pressing and holding F2/Del to enter the BIOS. Then, set the WinPE bootable drive as the boot disk and press F10 to exit.

Step 4. Boot the computer again and enter the WinPE interface. Then, open EaseUS Partition Master and click "Boot Repair" under the "Toolkit" option.

Step 5: Select the system you want to repair and click "Repair."

Step 6. Wait a moment, and you will receive an alert that the system has been successfully repaired. Click "OK" to complete the boot repair process.

Once done, you can run the Boot Repair feature to fix this issue:

• Double-click the Boot Repair tool on the desktop, or run EaseUS Partition Master, and go to the Toolkit section, select "Boot Repair".
• Then, select the system or your current computer OS that you want to repair and click "Repair."

Wait for the process to complete and reboot your PC.

Bonus: Change UEFI Boot Sequence If Necessary

If the problem is still there, re-enter BIOS to change the boot order and set UEFI as the boot volume. Or, you can directly take EaseUS Partition Master with its Boot Repair feature for help:

Step 1. Launch EaseUS Partition Master on your computer and navigate to the "Boot Repair" section in "Toolkit."

Step 2. Go to the "UEFI items" tab and change the boot order by dragging the drive to the first position.

Step 3.Click "Save" to apply the changes. Then, your OS is set to boot from the new hard drive.

Note:If you hit on the "Reboot" button after the drive, the OS can boot from this disk at the next time for once.

If you are interested in the same topic in the notebook, click the link below:

Guide 2. Fix 'No Boot Device Found' on MBR OS Disk

When your system disk goes with the MBR partition style, the fixes for the 'no bootable device found' error vary. Here are some solutions you can try to get rid of the issue:

Method 1. Rebuild MBR

When the MBR partition table on the system disk is corrupted, the system may also be unable to find its boot drive. So, the fix for this issue is to fix and rebuild the MBR.

You can either try CMD command or an automated tool for help. To ease you from the complexity, we'll show you the process by using EaseUS Partition Master with its Rebuild MBR feature:

Create a bootable USB with EaseUS Partition Master on a healthy disk, then fix your PC with the steps here:

Step 1. Create a WinPE bootable disk

• Launch EaseUS Partition Master, and click "Bootable Media" on the toolbar. Select "Create bootable media".
• Click "Next" to finish the process.

Step 2. Boot EaseUS Partition Master Bootable USB

• Connect the bootable USB or CD/DVD to your PC. 
• Press F2 or Del when you restart the computer to enter the BIOS screen. Set and boot your computer from "Removable Devices" or "CD-ROM Drive". And then EaseUS Partition Master will run automatically.

Step 3. Rebuild MBR

• Click "Toolkit" and choose "Rebuild MBR".

• Select the disk and the type of MBR. Then, click "Rebuild".

• After that, you can see "MBR has been successfully rebuilt on Disk X".

After this, unplug the bootable USB and reboot PC. You should be able to get your PC with a running and healthy OS back.

Method 2. Reset Primary Partition as Active

The primary partition is the one on which the operating system is installed. It must be set to active in order for the OS to boot successfully. As a result, if it is accidentally turned inactive, the "no boot device found" error will be triggered. As a result, please reactivate it. To do so:

Step 1. Start your computer by inserting the Windows installation DVD. Choose your language and keyboard layout, then click "Repair your computer."

Step 2. If you have a Windows 10 or Windows 8 installation DVD, select "Troubleshoot" and then "Command Prompt." If you are using a Windows 7 installation DVD, pick the first option, "Use recovery tools that can help...", Windows 7 OS, and tap "Next" on the "System Recovery Options" page. In the following window, click "Command Prompt."

Step 3. Write the below-mentioned commands in the elevated Command Prompt window one at a time, then click "Enter."

• list disk
• Select disk 0 (0 is the disk number of the system hard disk.)
• list partition
• Select partition 1 (1 represents the number of your system partition.)
• active

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Method 3. Check Internal Hard Disk Status

If there are any disc problems on the internal hard drive, the "no bootable device found" error message may appear during Windows starting. The CHKDSK.exe utility can be used to check its status. To do so, use method 2 to open the Command Prompt window. Then run the command "chkdsk c: /f /x /r," which will check for problems on the C drive (the Windows operating system is often installed on this drive) and, if feasible, repair them.

Note: The CHKDSK command might cause permanent data loss. If you value your data

Bonus: What Does No Bootable Devices Found Mean

So, what exactly is a boot drive error? What causes anything like this to happen? And, if no bootable device error occurs, can you resolve the issue on your own, or will you require the assistance of a professional? The answers to these critical questions will prepare you for the next time you get no bootable devices found.

To start Windows 10 or macOS, all PCs require a boot device. There should be one on your system; however, this error indicates that the computer cannot identify a bootable disk. Instead of opening Windows usually, you are greeted with a black screen of the startup command prompt immediately after hitting the power button. The motherboard of the machine causes the "boot device not found" problem. The 3f0 error message may appear if you have an HP laptop computer or PC.

The BIOS includes the boot device sequence for your laptop or desktop computer, with the system drive often being the first boot device (Windows partition). It also consists of the hard disk's hardware address and the instruction sets required to access the hard drive's master boot record (MBR) or boot sector. The MBR stores the operating system's starting location, which is read when you boot up Windows 10 (or whatever version you're using). As a result, some variations of this warning read, "boot device not detected; please install an operating system."

If the BIOS cannot identify the bootable hard discs, the MBR or boot sector cannot be located. The computer looks for all known configurations of the boot device, and if all devices fail, the message is sent.

A bootable device can be any storage attached to your computer, and sophisticated computer users can boot from the network or remote repository. Still, most of us boot directly on the motherboard through USB, CD/DVD, or HDD/SSD/NVMe.

Further: Causes of No Bootable Devices Found Error

As previously stated, the "no bootable devices found" problem occurs when your computer cannot locate a boot sector. However, we shall delve further to determine the meaning of the "boot device not found" problem. The boot procedure commonly occurs without trouble when you restart your computer until you face this starting error.

A boot device is storage hardware (such as a hard disc drive or solid-state drive) or a partition on your storage device that identifies itself as a bootable storage device to your laptop/BIOS computer's (the firmware on your motherboard). There are two ways it defines itself as a bootable device.

• The bootable storage device identifies itself as a "handshake" in the BIOS. The motherboard examines the hardware identity of the storage device that contains information such as manufacturers, model, storage capacity. Essentially, the system board has been integrated with the hard disc or flash drive.
• The motherboard maintains a prioritized list of all storage devices connected to the PC. This is referred to as the boot sequence or boot order. The first device that may identify itself as a boot device is the one from which your computer will boot. The motherboard then initiates an instruction set to find the device's boot sectors and master boot record (MBR), after which the MBR boots Windows.

That is how your computer determines which MBR boot device to use. Or, at the very least, attempt. If it can't boot from the first one in the list, you're likely to get a "no boot device found" problem message.

Conclusion 

The Windows boot device not detected could cause your computer to malfunction. If you face this issue, don't be concerned; instead, use the effective methods highlighted above in this article to solve problems. If you're searching for a more straightforward option, we recommend using EaseUS Partition Master to eliminate this error in no time!

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