No Bootable Device Found in Windows 10 - Solved Now!

Key Takeaways:

• An incorrect boot sequence, a corrupted master boot record, a missing boot file, or a corrupted drive can result in a "no Bootable device found".
• Checking your BIOS setup and boot sequence can quickly troubleshoot the error. Otherwise, try running a boot repair tool and scanning the drive.
• If your computer's MBR is corrupted, try to enter the Windows recovery environment using a professional repair tool.
• This article is suitable for no bootable device found on Acer, HP, Lenovo and Dell.

What does it mean when a computer says no bootable device?

No bootable device means that the BIOS cannot find a device with a bootable operating system, and it prevents you from using the computer. A damaged drive, a disconnected cable, a corrupted master boot record corruption, an uninstalled operating system, or a corrupted operating system can cause this problem.

Do you get annoyed because you can’t boot your computer only receiving a message “No bootable devices found”? A bootable device means any piece of hardware that contains or can read the files required for a computer to start. A hard drive, floppy disk drive, CD-ROM drive, DVD drive, and USB thumb drive are all considered bootable devices. How comes no bootable device found in Windows 10? Let’s get start.

How to fix no bootable device found in Windows 10 accordingly?

If you encounter no bootable device is detected, there are two possible causes. You can find corresponding solutions here. Windows installation media is needed for solution number 2. If you don't have it, you can turn to a free tool offered in the next part.

Hard drive is not set as first boot device in BIOS

In this case, you can simply change boot order like this:

1. Restart computer and tap Del to enter BIOS interface.

2. Press the right arrow key on your keyboard until the Boot tab is opened. Move “Hard Drive” to the top of the boot order list by pressing “+” or “-”.

3. Press F10 to save changes and restart computer.

Tips:
● The function key to enter BIOS interface is likely to be F1, F2, F3, Esc, or Delete. If you are not sure, consult your PC manufacturer or go through your user manual.
● Since every BIOS setup utility is different, the menu option or configuration item might be called Boot, Boot Options, Boot Order, etc. The boot order option may even be located within a general menu option like Advanced Options, Advanced BIOS Features, or Other Options.

Rebuild Corrupted MBR

If MBR of your computer is corrupted, you can also rebuild MBR with the best partition manager AOMEI Partition Assistant Standard. It is reliable and totally FREE. The tool provides a one-stop shop for fixing Windows startup errors and you can easily create bootable media and rebuild MBR. With a clean interface, you can fix hard drive errors like an expert.

I’ll show you how to fix no bootable device in Windows 10 via AOMEI Partition Assistant step by step:

Step 1. Connect a USB drive to a computer in good condition. Download, install and run AOMEI Partition Assistant. Click on "Tools" > “Make Bootable Media” on the main interface and follow the wizard to complete the process.

Tips: The bootable USB will contain installed AOMEI Partition Assistant.

Step 2. Insert the bootable USB into the computer which has a boot problem. Boot from the USB by changing boot order in BIOS.

Step 3. You’ll see loaded AOMEI Partition Assistant once log in. Right-click the system disk and select “Rebuild MBR”.

Step 4. Set the type of MBR for Window 10 in the pop-up window.

Step 5. Click “Apply” and then “Proceed” to commit the pending operations. Restart your computer later.

Fix Boot Erroors via CMD

Corrupted MBR can also lead to no boot device available in Windows 10. In this situation, you may repair MBR in following steps:

1. Insert the Windows installation media into your computer and boot from it.

2. Select the language and region, and then click on “Repair your computer” when you see the “Install now” window.

3. Select Troubleshoot and then Command Prompt on the Advanced options screen.

4. In Command Prompt, input following command lines and press Enter after each. (If you are asked whether you want to add a new installation to boot list, type “y” and then press Enter.)

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

5. Exit Command Prompt and restart your computer.

Summary

Now you have the best solutions for no bootable device found in Windows 10. They apply to no boot device found in Windows 7 as well. If any data loss happens during your operation, you can use the "Recover Data" function to retrieve lost data. In addition to rebuilding MBR, you can also use AOMEI Partition Assistant to increase memory of C drive, erase SSD before selling and so on.