# Windows 11 boot loop or automatic repair: the WinRE order that works

> A calm recovery sequence for a Windows 11 boot loop: firmware, BitLocker, WinRE startup repair, uninstall updates, restore point, command prompt and reinstall.

**Tested on**

- Build: 26300.9457
- Edition: Pro (26H2)
- Architecture: x64
- Evidence: E1
- Verified: 2026-10-28

## The short answer

A boot loop is not one problem. Separate:

1. **Firmware/boot device** — does the firmware see the disk?
2. **BitLocker** — is it asking for a recovery key?
3. **Windows boot manager** — does WinRE load?
4. **Recent change** — update, driver, partition, overclock?
5. **Hardware** — disk errors, RAM, overheating?

Work in that order. Do not reinstall before you know which layer failed.

## Before WinRE

- Disconnect unnecessary USB devices, docks and external drives.
- Check the firmware boot order and whether the internal disk is detected.
- If BitLocker prompts, enter the recovery key; do not “fix” it by clearing the TPM.
- If you overclocked/undervolted, load defaults.
- If the case was opened, check RAM/GPU seating.

## Enter WinRE

Boot the Windows USB or use **Settings → System → Recovery → Advanced startup → Restart now**. Then:

**Troubleshoot → Advanced options**

| Order | Tool | Use when |
|---|---|---|
| 1 | Startup Repair | Boot files/driver change suspected |
| 2 | Uninstall Updates | Loop started after an update |
| 3 | System Restore | A restore point exists before the change |
| 4 | Command Prompt | You need logs/BCD/disk checks |
| 5 | Reset this PC | Windows is unrecoverable, files backed up |
| 6 | Reinstall | Disk/partition/OS is beyond repair |

## Symptom → first move

| Symptom | First move | Do not |
|---|---|---|
| Firmware does not list the disk | Check cable/BIOS/NVMe seating | Reinstall Windows first |
| BitLocker recovery prompt | Enter the recovery key | Clear the TPM |
| “Preparing automatic repair” loop | Startup Repair / uninstall latest update | Run every `bootrec` switch |
| Boots after several tries | Check disk/RAM and recent driver | Ignore it as “random” |
| Blue screen with a stop code | Note the code, boot safe mode, remove the change | Reset before reading the code |
| No display but fans spin | Check GPU/output/cable, try iGPU | Assume Windows is corrupt |

## Data rescue before repair

If the disk is healthy but Windows will not boot, copy important files **before** resetting:

1. Boot a Linux live USB or WinRE command prompt.
2. Mount the volume read-only if possible.
3. Copy to an external disk; verify one file opens.
4. Only then try reset/reinstall.

If BitLocker is active, unlock the volume first; a live Linux environment cannot read it without the key.

## Command Prompt checks

```bat
diskpart
list disk
list volume
exit
```

```bat
chkdsk C: /scan
sfc /scannow /offbootdir=C:\ /offwindir=C:\Windows
bootrec /scanos
```

`bootrec /fixmbr` and `/fixboot` are legacy/BIOS tools; on UEFI, prefer Startup Repair and `bcdboot` only when you know the ESP layout. Do not run `bootrec /rebuildbcd` blindly on a multi-boot disk.

## If Windows starts

- Read **Event Viewer → System** around the first failure.
- Check **Reliability Monitor** for the driver/app installed before the loop.
- Uninstall the recent update/driver from Settings if it boots in safe mode.
- Run `DISM /Online /Cleanup-Image /RestoreHealth` and `sfc /scannow`.
- Make a restore point and a backup before the next change.

> **Caution: Do not clear the TPM to skip BitLocker**
>
> Clearing the TPM can destroy the key protector and make the disk unrecoverable. Enter the recovery key or restore from backup.

## If it is hardware

A disk that disappears from firmware, clicks, or throws `disk` errors in Event Viewer is not a Windows bug. Back up immediately, replace the disk, and reinstall. A RAM instability can also cause random boot loops; run a memory test if the loop is intermittent.

## Sources

- [Microsoft — Windows RE](https://learn.microsoft.com/en-us/windows-hardware/manufacture/desktop/windows-recovery-environment--windows-re--technical-reference)
- [Microsoft — BitLocker recovery](https://support.microsoft.com/en-us/windows/security/encryption/find-your-bitlocker-recovery-key)

---

Source: https://winbook.fyi/en/windows/fixes/boot-loop/