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This is because your USB drive is old USB 1.0 or 2.0, which is not supported by Windows 10. By default, your computer only boot from the first boot option.īootable USB not showing up in boot menu. This may happen because of incrrect boot order. This means your USB stick is either corrupted or unbootable itself, or USB boot is not supported on the computer.īootable USB not showing up in BIOS. There are some other reasons may cause Windows 10 not booting from USB, please refer to the following scenarios:īootable USB is not detected as a boot device. And usually, BIOS boot mode requires NTFS file system while UEFI (CSM disabled) requires FAT32. Specifically, most of the old computer models supports Legacy BIOS while the modern computer like Windows 8/10 uses UEFI boot mode. Windows 10 bootable USB not working issue may be caused by wrong boot mode or file system. If you happen to be in a similar situation, you could stay for a while to learn more about Windows 10 bootable USB not working and then fix the error with given solutions. I've tried changing boot order, or manually selecting USB with no positive result.

When I try booting from USB, the laptop ignores it and continues booting Windows. I've formatted the USB (tried MBR and GPT), and restored the ISO using Windows 7 USB/DVD Download Tool. Copy DVD Windows 7 media content to USB root folder (etc.I'm having problem with my Toshiba L875-S7308 where I cannot boot my USB while in UEFI mode.If your USB drive letter is “e” please run bootsect /nt60 e:.Insert Windows 7, 32/64-bit installation disk into DVD drive.Locate your USB drive disk number by executing list disk.Run diskpart utility by typing diskpart into command prompt window and pressing “Enter”.Open command prompt as administrator - Right click on Start > All Programs > Accessories > Command Prompt and select Run as administrator or type cmd in the Start search bar.USB drive with at least 8GB of free storage.Windows 7, 32/64-bit (depending on the system) installation disk.

This guide provided as-is, at your own risk. Please be extra careful during formatting, choosing the wrong drive will erase it completely. Please note: during this procedure you'll lose any data on your USB flash drive.