How to Make a Windows 11 Bootable USB (and Install From It)

A bootable USB is still the cleanest way to install Windows 11 — fresh install, new SSD, or a PC that won't boot. You need a 8 GB+ USB stick, twenty minutes, and a product key for the end. Here's the whole process.

Method 1 — Microsoft's Media Creation Tool (easiest)

  1. On a working PC, go to microsoft.com/software-download/windows11 and download the Media Creation Tool.
  2. Run it, accept the license, and choose USB flash drive. The tool downloads Windows 11 and writes the stick in one pass (everything on the stick is erased).
  3. Done — skip to "Installing from the USB".

Method 2 — Rufus (more control)

Prefer an ISO you keep, or need to bypass hardware checks on an older PC? Download the Windows 11 ISO from the same Microsoft page, then write it with Rufus (rufus.ie): select the USB, pick the ISO, and use Rufus's optional toggles (skip TPM/RAM checks, local account) as needed. Standard GPT/UEFI defaults are right for nearly all modern machines.

Installing from the USB

  1. Insert the stick into the target PC and boot from it — usually a boot-menu key at power-on (F12, F11, Esc or F9 depending on maker).
  2. Choose language → Install now.
  3. At the key prompt, enter your product key, or click "I don't have a product key" and activate later — either works. No key yet? A genuine Windows 11 Pro or Home lifetime key arrives by email in minutes.
  4. Pick the edition matching your key (Home vs Pro — not sure which?), choose Custom install, select the target drive, and let setup run.
  5. After setup, confirm activation in Settings → System → Activation — full steps and error fixes in our activation guide.

Common snags

PC boots straight to old Windows: re-open the boot menu or move USB above the disk in UEFI boot order. "This PC can't run Windows 11": TPM 2.0 or Secure Boot is off in UEFI — enable them, or use the Rufus bypass on unsupported hardware. Stick not detected: re-write it as GPT for UEFI; very old boards may need MBR.

Fresh install done? Windows re-activates automatically on the same hardware forever after the first activation — keep your key email safe, or recover it later with our find-your-product-key guide.

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