A bootable USB drive is commonly used to install Windows 11, repair a corrupted system, or access recovery tools. However, many users face issues where the bootable USB is not detected, does not appear in the boot menu, shows “No bootable device found,” or simply boots back into Windows instead of the installer.
In most cases, a bootable USB not working in Windows 11 is caused by incorrect BIOS/UEFI settings, improperly created boot media, Secure Boot restrictions, wrong partition scheme, or faulty USB ports, not a damaged USB drive. The steps below will help you fix the issue step by step.
How to Fix Bootable USB Not Working in Windows 11
Follow the steps below in order. After each step, test booting from the USB before moving to the next one.
1. Check If the Bootable USB Is Created Correctly
Improperly created boot media will not boot.
- Insert the bootable USB into your PC
- Open File Explorer
- Check if the USB contains files like boot, efi, sources, and setup.exe
- If files are missing, recreate the bootable USB
Always use reliable tools when creating bootable media.
2. Recreate the Bootable USB Using the Official Tool
Using unofficial tools can cause compatibility issues.
- Download the official Windows Media Creation Tool
- Run the tool as administrator
- Choose Create installation media (USB flash drive)
- Select Windows 11 and your language
- Let the tool recreate the USB
This ensures correct boot files and structure.
3. Try a Different USB Port or USB Drive
USB hardware issues are very common.
- Plug the USB into a different port
- Prefer USB 2.0 ports over USB 3.0 if available
- Avoid using USB hubs or front panel ports
- If possible, try a different USB flash drive
Some systems fail to boot from specific USB ports.
4. Access Boot Menu Manually
Your system may not boot from USB automatically.
- Restart your PC
- Press the boot menu key repeatedly during startup:
- F12 (Dell, Lenovo)
- Esc (HP)
- F8 / F11 (varies by manufacturer)
- Select the USB device from the boot list
If the USB does not appear, continue to BIOS setting
5. Change Boot Order in BIOS/UEFI
USB boot must be enabled and prioritized.
- Restart the PC and enter BIOS/UEFI (Del, F2, Esc, or F10)
- Go to Boot settings
- Enable USB Boot
- Move USB Storage Device to the top of the boot order
- Save changes and exit
Incorrect boot order prevents USB booting.
6. Disable Secure Boot Temporarily
Secure Boot can block unsigned boot media.
- Enter BIOS/UEFI
- Go to Security or Boot section
- Disable Secure Boot
- Save changes and restart
Re-enable Secure Boot after installation is complete.
7. Check Boot Mode (UEFI vs Legacy)
Mismatch between USB format and boot mode causes failure.
- Enter BIOS/UEFI
- Check Boot Mode or Boot Type
- Set it to UEFI for Windows 11
- Disable Legacy/CSM if enabled
- Save and exit
Windows 11 requires UEFI boot mode.
8. Use the Correct Partition Scheme (GPT)
Incorrect partition scheme prevents UEFI boot.
- If using tools like Rufus, select:
- Partition scheme: GPT
- Target system: UEFI (non-CSM)
- Recreate the bootable USB with these settings
MBR + Legacy mode will not work for Windows 11 installs.
9. Update BIOS/UEFI Firmware
Outdated firmware can cause USB boot issues.
- Visit your PC or motherboard manufacturer’s website
- Download the latest BIOS/UEFI update
- Follow official instructions carefully
- Restart and try booting from USB again
Firmware updates improve hardware compatibility.
10. Test the Bootable USB on Another PC
This helps identify the root cause.
- Plug the USB into another computer
- Try booting from it
- If it fails on both systems, recreate the USB
- If it works elsewhere, the issue is PC-specific
Testing confirms whether the USB or PC is at fault.
Final Thoughts
A bootable USB not working in Windows 11 is usually caused by incorrect boot mode, Secure Boot restrictions, improper USB creation, or BIOS settings, not a faulty USB drive. In most cases, recreating the USB using the official Media Creation Tool and ensuring UEFI + GPT settings resolves the issue.
To avoid future problems, always use official tools, compatible USB drives, and updated firmware.
