Fix Windows (10/8/7) Won't Boot From USB Error

Tracy King updated on Jan 14, 2021 to Computer Instruction | How-to Articles

Windows 10/8/7 Won't Boot from USB, Help!

Can't you boot from Windows 10 bootable USB drive? Are you trying to boot your computer from a bootable USB drive in Windows 10, 8 or 7 but the system doesn't allow you to do so?
What will you do to fix this issue after creating a Windows Installation Media on USB or how to make Windows bootable on a USB drive? 

Here in the below, you'll find two reliable methods to fix Windows won't boot from USB error and you may follow either one to realize your goal so to make Windows boot from USB drive now.

Method 1. Make Windows Boot from USB by Creating Portable Windows to USB

If you want to make your Windows system bootable from a tiny USB flash drive and take your system anywhere without catching the laptop, you can directly create portable Windows system such as Windows 10, 8 or 7 to your USB drive with EaseUS Todo Backup.

EaseUS Todo Backup supports you to create a Windows portable USB drive for you to carry Windows system anywhere and you can boot your OS on any other Windows machines without any problems. It's 100% free within 30 days for creating Windows portable USB drive. 

  Free Download

Support Windows 10/8.1/8/7/Vista/XP

Video tutorial of how to create Windows portable USB drive:

Follow to see how to make Windows boot from USB now:

USB requirements:

1. Check how much disk space is used for the system C drive. Let's assume 40GB. Then prepare a qualified USB drive, of which the disk capacity must be larger than 40GB.

2. Do you use an empty new USB drive or an old one? Make sure that all the important data has been safely transferred because the system clone will overwrite data on it completely.

3. Correctly connect the USB drive to your machine and make sure that Windows has detected it and assigned a drive letter to it.

Follow the overall process to create a portable Windows USB drive and boot from it:

Step 1. Launch EaseUS Todo Backup. Expand the menu and click "System Clone" in the lower position.

click system clone

Step 2. On the "System clone" window, the software will choose the system partition and boot partition by default. Just Choose the USB drive as the destination disk. 

Click on "Advanced options" and then "Create Portable Windows USB drive". Click "OK".

choose the usb drive to create a portable windows usb drive

Click "Proceed". The software will start immediately cloning the default partitions of your desktop/laptop to the USB drive. After the cloning process is over, you can safely plug the USB drive out.

start to create portable windows usb drive

Step 3. Boot from the USB drive.

  • Connect your portable USB to the computer
  • Restart the computer and press "Del" to enter BIOS
  • Set the PC to boot from the portable USB by changing the boot order in BIOS under the "Boot" tab
  • Save changes and you'll see your system booting up from the USB drive

Method 2. Manually Fix Windows Won't Boot from USB Error

If you just want to simply make Windows boot from the created bootable USB drive on your computer, just follow tips here in the below to get rid of this issue right now:

Step 1. Check if the USB drive is bootable

If the USB bootable drive isn't created in the right way or if the USB corrupted, you will not be able to install Windows with it. 
So when you cannot install Windows or fail to boot Windows from created bootable USB, you shall first create a Windows Installation Media to USB with a right way.

Step 2. Make sure your computer support to boot from USB

1. Enter BIOS, go to Boot Options, check Boot Priority.
2. If you see the USB boot option in Boot Priority, it means that your computer support to boot from USB. 
If you don't see the USB, it means that the motherboard of your computer doesn't support it. You'll need to find other methods to boot the computer.

Step 3. Set Computer/PC to boot Windows from USB

1. Restart PC and press F2 while booting Windows so to bring up BIOS.
2. Find Boot Options, select USB-HDD in the First Boot Device option.

Makes Windows boot on USB.

3. Then confirm and save all changes to enable Windows to boot from USB.
Set Windows to boot from USB.

Do You Need Specialized Services for System Boot Issues?
EaseUS also provides 1-on-1 remote assistance to fix the boot issue. If the solution above does not work for you, please contact our professionals via Email or LiveChat in this page. To ensure our professional assistance work, you are suggested to connect the unbootable system drive to a healthy computer when getting connected with us.

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