Windows 10 Bootable USB Not Showing in Boot Menu: Getting Your PC to Start From a USB Stick

You made a Windows 10 installation or recovery USB, plugged it in, and pressed the boot menu key. The list shows the internal drive and maybe a network option, but no USB stick. When a Windows 10 bootable USB not showing in boot menu blocks a reinstall or repair, the PC either cannot see the stick or does not accept it as bootable.

Firmware only lists USB devices it considers bootable in the current mode. A stick prepared for UEFI may not appear in Legacy mode, and a Legacy-only stick may not show when the PC uses UEFI with CSM turned off. Secure Boot can also reject some third-party boot media.

Fast Startup and fast boot options in the BIOS can skip USB detection altogether.

Adjusting boot settings or remaking the USB in the right format makes it link slot appear.

What Usually Triggers It

The USB is missing from the menu for these reasons:

• The USB was formatted for a different boot mode than the PC uses.
• “Fast Boot” in the BIOS skips USB initialisation.
• USB boot is disabled in the BIOS.
• The stick was not written correctly, so it is not bootable.

Some PCs only list USB sticks plugged in before power-on, not those inserted at the boot menu.

First Steps to Try

Check the stick and ports.

1. Shut down fully, plug the USB stick into a rear port, then turn the PC on.
2. Press the boot menu key, such as F12, F11, F8, or Esc, repeatedly.
3. Look for entries named after the USB brand, or starting with “UEFI:.”
4. Recreate the USB with Microsoft’s Media Creation Tool if it was made another way.
5. Test the stick in another PC to see whether it appears there.

If the Problem Continues

Change BIOS settings.

1. Enter the BIOS setup.
2. Turn off “Fast Boot” or “Ultra Fast Boot.”
3. Make sure “USB Boot” or “Boot from USB” is enabled.
4. If the stick is Legacy-only, enable CSM; otherwise keep UEFI and recreate the stick for UEFI.
5. Save changes and restart with the stick connected.

You can also start the PC from Windows with Shift + Restart, then choose “Use a device” to pick the USB stick.

Protect Your Data First

Restore any BIOS settings you changed once the installation or repair is complete, especially Secure Boot. Creating a bootable USB erases the stick, so copy files off it first.

The Bottom Line

A USB missing from the boot menu usually means a boot mode mismatch or fast boot skipping detection. Plug it in before power-on, disable Fast Boot, enable USB boot, and recreate the stick if needed.