Windows Startup Repair: Step-by-Step Guide

Windows Startup Repair is a built-in recovery tool that automatically diagnoses and fixes common problems preventing Windows from booting, such as corrupted system files, missing boot configuration data, or driver issues. This guide walks you through launching Startup Repair from both the login screen and a recovery drive, then covers what to do if the tool doesn’t resolve the issue.

What You’ll Need

A working Windows PC (to create a recovery drive if needed)
A USB drive (8 GB or larger) if you need to create a recovery drive
Access to the Windows login screen or a Windows installation media (DVD/USB)
Your Windows product key if using installation media (usually not required for repair)

Step-by-Step

Try the Automatic Startup Repair first. If Windows fails to boot two consecutive times, it automatically enters the Windows Recovery Environment (WinRE). Let it run the automatic diagnostics; this often fixes the issue without further input.
Force Startup Repair from the login screen. If you can reach the login screen, hold the Shift key while clicking the Power icon and then Restart. Continue holding Shift until the blue recovery menu appears.
Navigate to Startup Repair. In the recovery menu, click Troubleshoot > Advanced options > Startup Repair. Windows will ask you to select an account; choose your account and enter your password if prompted.
Wait for the repair to complete. The tool will scan your system for common boot issues and attempt to fix them automatically. This can take 15–30 minutes. Do not interrupt the process.
Restart your PC. After the repair finishes, you’ll see a message indicating whether it succeeded. Click Finish to restart. If the repair failed, you’ll see a message with a log file path; note it for troubleshooting.
If you can’t boot to the login screen, create a recovery drive on another PC. On a working Windows PC, insert a USB drive, open the Start menu, search for “Create a recovery drive,� and follow the prompts. Ensure the USB is empty, as it will be formatted.
Boot from the recovery drive. Insert the USB into the problematic PC, restart, and press the boot menu key (usually F12, F2, Esc, or Del) to select the USB drive. If you don’t see the boot menu, you may need to change the boot order in BIOS/UEFI.
Run Startup Repair from the recovery drive. Once the drive loads, choose your language and keyboard layout, then click Repair your computer in the bottom-left corner. Then follow the same path: Troubleshoot > Advanced options > Startup Repair.
Use System Restore as a fallback. If Startup Repair doesn’t work, go back to Advanced options and try System Restore. This returns your PC to a previous state without affecting personal files.
Use Command Prompt for manual fixes. In Advanced options, open Command Prompt and run these commands one by one, pressing Enter after each: bootrec /fixmbr, bootrec /fixboot, bootrec /scanos, bootrec /rebuildbcd. Then restart.

Common Mistakes

Interrupting the repair. Startup Repair can take a long time, and turning off the PC mid-process can cause further corruption. Let it run to completion.
Using the wrong recovery drive. A recovery drive created on a 32-bit version of Windows won’t work on a 64-bit system, and vice versa. Match the architecture.
Skipping the password prompt. If you have a Microsoft account password, you must enter it to run Startup Repair. Forgetting it can prevent the tool from running.
Assuming Startup Repair fixes everything. It only addresses boot-related issues, not hardware failures or malware infections. If the problem persists, deeper troubleshooting is needed.
Not backing up data. While Startup Repair doesn’t delete personal files, other recovery tools like System Restore or Refresh might. Always back up important data if possible.

Tips

Create a recovery drive before you need it. Do this on a healthy PC and store it somewhere safe. It’s a lifesaver when Windows won’t boot.
Use the “Automatic Repair� loop. If Windows enters the recovery environment automatically, let it run; it often fixes the issue without user input.
Check the log file. If Startup Repair fails, it shows a log file path (e.g., C:\Windows\System32\Logfiles\Srt\SrtTrail.txt). You can view it via Command Prompt to see what went wrong.
Disable Fast Startup. Some users report that Fast Startup (a power option) can cause boot issues. If you can access Windows, disable it in Control Panel > Power Options.
Keep your system updated. Regular Windows updates often fix boot-related bugs that could trigger the need for Startup Repair.

Troubleshooting

If Startup Repair doesn’t resolve the problem, try these steps in order:

Check the log file. Use Command Prompt from Advanced options to open the log: notepad C:\Windows\System32\Logfiles\Srt\SrtTrail.txt. Look for error codes or specific files that failed.
Run System File Checker (SFC) and DISM. In Command Prompt, run sfc /scannow and then DISM /Online /Cleanup-Image /RestoreHealth. These repair corrupted system files.
Use System Restore. If you have a restore point, go back to Advanced options > System Restore. This can undo recent system changes that broke booting.
Try “Startup Settings� for Safe Mode. In Advanced options, choose Startup Settings and restart. Then press 4 or F4 to boot into Safe Mode. From there, you can uninstall recent drivers or run antivirus scans.
Reset or reinstall Windows. As a last resort, use the “Reset this PC� option (if available) or reinstall Windows from installation media. This will remove apps and possibly files, so back up if possible.
Consider hardware issues. If none of the above works, the problem may be failing hardware (RAM, hard drive, or SSD). Run a memory diagnostic (Windows Memory Diagnostic tool) or check disk health with chkdsk /f from Command Prompt.

Frequently Asked Questions

Does Startup Repair delete my files?

No, Startup Repair only fixes boot-related system files. It does not delete personal documents, photos, or other user data.

How long does Startup Repair take?

Typically 15–30 minutes, but it can take longer on older or heavily corrupted systems. Do not interrupt it.

Can I run Startup Repair from a USB drive?

Yes, you can create a recovery drive on another PC and boot from it to access Startup Repair. You can also use Windows installation media and select “Repair your computer.�

What does the “Startup Repair couldn’t repair your PC� message mean?

It means the tool couldn’t automatically fix the issue. You’ll need to try manual methods like Command Prompt commands, System Restore, or a full reinstall.

Will Startup Repair work if my PC is infected with malware?

Startup Repair focuses on system files, not malware. If malware is the cause, you may need to boot into Safe Mode and run antivirus software, or use a rescue disk.

Can I use Startup Repair on Windows 10 and Windows 11?

Yes, the steps are essentially the same for both versions. The recovery environment menu looks similar, but the options are identical.

General steps for current mainstream versions; menus can differ by device and version. See the disclaimer or report an error.

More in this bed

The whole Tech How-To bed →