By Ivy / Last Updated July 2, 2020

Bootable USB is a media that contains everything required to boot Windows. And it's always used when your computer get in trouble, clean install a fresh copy of Windows, in-place upgrade to Windows 10 from previous veriosn. But sometimes you will find Windows 10 won't boot from USB drive, just like the following case.

I'm having problem with my Toshiba L875-S7308 where I cannot boot my USB while in UEFI mode.
I've formatted the USB (tried MBR and GPT - same result), and restored the ISO using Windows 7 USB/DVD Download Tool. When I try booting from USB, the laptop simply ignores it and continues booting Windows.
I'v tried changing boot order, or manually selecting USB with no positive result. It seems like it's not even recognizing it (it's not showing the USB's name in the boot menu).

Now, let's have a glance about this article.

Windows 10 bootable USB not working

To be honest, many of users like you encounter similar issues above, the computer directly boot from the current Windows without displaying any error message. It may be caused by wrong boot mode, just change it to right one. Most of the old computer models support Legacy BIOS while the modern computer like Windows 8/10 use UEFI. Also, it's probably a problem of file system issue. Usually, BIOS requires the USB stick to be NTFS and UEFI to be FAT32.

Besides, you may encounter other situations. Here, I'll them and related cause.

  • Bootable USB is not detected as a boot device. This means your USB stick is either corrupted or unbootable itself, or USB boot is not supported on the computer.

  • Bootable USB not showing up in BIOS. This may happen because of incrrect boot order. By default, your computer only boot from the first boot option.

  • Bootable USB not showing up in boot menu. This is because your USB drive is old USB 1.0 or 2.0, which is not supported by Windows 10.

  • You can't boot from USB, even select the right boot option. In this case, the USB drive is likely to be damaged or corrupted. You may receive error message like "no bootable devices found".

And then, see below and follow the suggestions to fix Windows 10 boot from USB not working issue.

Windows 10 not booting from USB - how to fix?

1. Take your USB hard drive and use it on another computer, see if it’s bootable. This is the simplest way.

2. Format the drive with NTFS file system if the computer is Legacy BIOS mode. Meanwhile, format your USB with FAT32 if your computer boot mode is UEFI.

3. Check if your computer supports USB Boot Options and set USB as the first boot option. You can restart your computer, press the key (eg: F2, ESC) on the first screen to enter BIOS, find out Boot Options or something like that and set boot priority to USB drive. If not, your computer does not support this option.

Check USB BIOS

4. Enable CSM or Legacy boot mode, and disable Secure Boot Control. You can enter the BIOS screen and click Boot > Launch CSM and enable it. Next, click Security > Secure Boot Control and disable it.

Enable CSM

5. Change boot mode in BIOS. You can enter BISO and click UEFI/BIOS Boot Mode or Launch Storage OpROM Policy, then select the right mode.

Uefi Bios Boot Mode

Can't boot from USB - create a bootable USB from scratch

Up still now, if you don't fix Windows 10 bootable USB not detected or showing up via the given solutions, you can download Windows 10 media creation tool from Microsoft's official website, then create a bootable USB drive.

Also, you could try third-party media creation tool like AOMEI Backupper. It's simple and easy, more flexibly. With the help of this software, you can create a recovery disk for Windows 10 and boot from all kinds of operating system, including Windows XP/Vista/7/8/8.1/10. That's to say, you don't need to create a repair boot drive for every computer.

Are you surprised by its strong compatibility? Now, let's have a closer look at how it works.

Step 1. Download AOMEI Backupper Standard, install and launch it. And then, click Create Bootable Media under the Tools tab.

Create Bootable Media

Step 2. Select Bootable Disc Type. It’s recommended to select Windows PE. This option is suitable for everyone and offers you more operations than Linux.

Windows Bootable Disc

Step 3. Select the boot mode for your disc and then click Next. If your computer is Legacy BIOS mode (system disk is of MBR partition style), you can tick Create legacy bootable disc. If not, you should tick Create UEFI bootable disc.

Windows Legacy Boot

Step 4. Tick USB Boot Device and then click Next to move on.

Select Usb Device

Step 5. Wait for the process and click Finish when it reaches to 100%.

Finish

Now, computer won't boot from USB is not a problem anymore. With the newly created recovery disk, you can install SSD on Windows 10, or do some repairs for your troublesome computer.

It's suggested to retain AOMEI Backupper Standard on your computer. Except for bootable media creation, it can do more for you, such as, clone USB boot drive for a copy of backup, clone system or disk for more disk space or better performance, backup backup system, disk, files and partitions in case of sudden failure, etc.

Please note that some features disaplay on the free version is charged, you can use it only when you upgrade to AOMEI Backupper Professional. If you use a server-based computer, you need to download AOMEI Backupper Server.

Last thing: Boot from USB in Windows 10

This is the last things for Windows 10 recovery usb not working, boot from this drive and check if it's bootable. To do this, you can use Windows 10 quick boot menu "Use a device" without changing the startup sequence in the BIOS. Also, if you cannot see this option, you need to manually change boot order and boot from the bootable USB.

To boot Windows 10 from quick boot menu, use the following steps.

Step 1. Press and hold the "Shift" key while clicking "Restart" button. Then, your computer will reboot to the Advanced Startup Options screen, click "Use a device".

Use A Device

Step 2. Select the boot USB drive, wait and see if your computer boot from this drive.

To change boot order manually and boot from USB, see steps below.

Step 1. Shutdown your computer and then start it.

Step 2. Press a specific key when you see a prompt at the first boot screen, like this, "Press ESC to enter BIOS". Also, if your computer is fast boot mode, you don't need to press any key.

Step 3. Go to the "Boot" tab and use the up arrow to move the USB drive to the top.

Step 4. Press "F10" to save changes and restart your computer with USB dive.

Conclusion

That's all for Windows 10 bootable USB not working and how to boot from USB in Windows 10. If you want to avoid this problem once and for all, it's suggested to create a bootable media with official media creation tool or third-party tool AOMEI Backupper Standard.

Personally, I prefer using AOMEI Backuper. Because it's an all-in-one software which contains backup & restore, clone and many useful utilities. And these features are helpful to ensure data and system security. Download and enjoy your new journey.