Windows Stuck In Update Loop

When Windows gets stuck on “Preparing Automatic Repair,” it usually means the system detected a startup problem it cannot fix automatically. This guide covers the most common causes and solutions for Windows 10 and Windows 11.

Symptoms

  • Stuck on “Preparing Automatic Repair” screen
  • Loops back to the same message after restart
  • Black screen after the repair message
  • “Diagnosing your PC” appears repeatedly
  • Windows never reaches the login screen

1. Power Cycle the PC

Clears temporary faults that can trigger repair loops.

  • Turn off the PC completely
  • Unplug power for 30 seconds (or remove battery if possible)
  • Reconnect and restart

2. Boot Into Recovery Mode

Use Windows Recovery to access repair tools.

  • Turn the PC on and off three times
  • Windows will enter Recovery Mode
  • Select Troubleshoot → Advanced options

3. Run Startup Repair

Windows attempts to fix boot issues automatically.

  • Go to Advanced options
  • Select Startup Repair
  • Follow the on‑screen instructions

4. Repair Boot Files

Corrupted bootloaders often cause repair loops.

  • Open Command Prompt from Recovery Mode
  • Run the following commands:
bootrec /fixmbr
bootrec /fixboot
bootrec /scanos
bootrec /rebuildbcd

5. Check Disk for Errors

Drive problems can prevent Windows from loading.

  • In Command Prompt, run:
chkdsk C: /f /r

6. Disable Automatic Repair (Temporary Test)

Helps identify if the repair loop is caused by a system file.

  • Run this command in Command Prompt:
bcdedit /set {default} recoveryenabled No

If Windows boots afterward, a corrupted system file or driver is likely the cause.

7. Use System Restore (If Available)

Restores Windows to a working state without deleting files.

  • Go to Advanced options
  • Select System Restore
  • Choose a restore point

8. Reset Windows (Last Resort)

If nothing works, a reset may be required.

  • Select Reset this PC from Recovery Mode
  • Choose Keep my files when possible

Still Having Issues?

If the repair loop continues, the problem may be hardware‑related. Check:

  • SSD/HDD health
  • RAM stability
  • Motherboard or power issues

For deeper troubleshooting, see related guides such as boot repair, drive diagnostics, and hardware testing.

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