By Lily / Last Updated September 9, 2019

An error occurs: no bootable device found in Windows 10

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.

No Bootable Devices Found

Possible causes and useful solutions for no bootable device found in Windows 10

If you encounter no bootable device is detected, there are two possible causes:

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.

BIOS Setup Utility

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.

Corrupted MBR

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.

Best partition manager to solve no bootable device found in Windows 10

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. 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 “Make Bootable Media” on the left-hand pane and follow the wizard to complete the process.

Make Bootable Media

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 login. Right click the system disk and select “Rebuild MBR”.

Rebuild System Disk MBR

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

Choose MBR Type

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

Apply

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. 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.