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How to Fix Corrupt Registries in Windows

1. Run System File Checker (SFC)

  • SFC is a built in Windows tool that scans for and repairs corrupted system files, including registry issues.
  • To run SFC:
  • Open Command Prompt as administrator (search for “cmd”, right click and select “Run as administrator”).
  • Type sfc /scannow and press Enter.
  • The scan will take some time. Let it complete and restart your PC if it told you that it repaired some files.

2. Use DISM (Deployment Image Servicing and Management)

DISM is another built in tool that can repair underlying system image problems that sometimes affect the registry.

Use DISM only if SFC doesn’t resolve the issue.

To run DISM:

Open Command Prompt as administrator (same as step 1 above).

Type these commands one by one, pressing Enter after each:

DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth

Each scan will take time. Be patient and only close the window after the final command finishes.

Restart your PC after running DISM.

3. System Restore

If the problem started recently, System Restore can revert your system to a point before the corruption happened.

This won’t affect personal files but will uninstall recently added programs.

To use System Restore:

Search for “Create a restore point” in the Windows search bar.

Click “System Restore” and follow the instructions to choose a restore point.

4. Import a Registry Backup (if you have one)

If you have a previous backup of your registry created before the corruption, you can import it to potentially fix the issue.

Importing a registry is a complex procedure and should only be attempted if you are an advanced user. Incorrect modifications can cause other problems. If you’re not sure don’t do it yourself.

5. Reinstall Windows (Last Resort):

Reinstalling Windows means a complete system wipeout and you should only consider it as a last resort. This will erase all data and programs on your system.

Make sure to back up your important files before reinstalling.

You can usually reinstall Windows through a recovery option on your PC or by creating a bootable installation media.

Run  a Virus Scan Just in Case

Run a Malware Scan: Malware can sometimes corrupt the registry. Run a scan with your antivirus software to rule that out.

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