Microsoft Windows Error Code 0x0000005A: How to Fix It

Medium 2-4 hours High Severity Verified June 2026
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Error Code
0x0000005A
Brand
Microsoft Windows
Product Type
operating_system
Severity
High
DIY Difficulty
Medium
Estimated Fix Time
2-4 hours
Windows error code 0x0000005A (CRITICAL_SERVICE_FAILED) occurs when a critical system service fails to start during boot, often causing blue screen crashes or system instability. This error typically results from corrupted system files, driver conflicts, or registry issues that prevent essential Windows services from loading properly.
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Tools You'll Need

How to Fix Error Code 0x0000005A

  1. Restart Your Computer

    Make sure to save any open work before forcing a shutdown

  2. Boot into Safe Mode

  3. Run System File Checker (SFC)

    Do not interrupt the SFC scan process as it could cause further system damage

  4. Run DISM Command

    Ensure you have a stable internet connection as DISM may download files from Windows Update

  5. Check Services in Safe Mode

  6. Update or Rollback Drivers

    Only uninstall drivers for non-critical devices like audio or network adapters, not system devices

  7. Use System Restore

    System Restore will uninstall recently installed programs and updates

  8. Check Hard Drive Health

    Disk check can take several hours on large drives - do not interrupt the process

  9. Reset Windows (Keep Files)

    Back up important files before proceeding as this process reinstalls Windows completely

Parts You May Need

External hard drive or USB drive
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Windows installation media
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External hard drive or USB drive
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Windows installation media
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External hard drive or USB drive
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Windows installation media
Check Price on Amazon
External hard drive or USB drive
Check Price on Amazon
Windows installation media
Check Price on Amazon
External hard drive or USB drive
Check Price on Amazon
Windows installation media
Check Price on Amazon
External hard drive or USB drive
Check Price on Amazon
Windows installation media
Check Price on Amazon
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When to Call a Professional

Contact a computer technician if the error persists after trying all steps, if you're uncomfortable using Command Prompt tools, or if the computer won't boot into Safe Mode. Professional help is also recommended if you suspect hardware failure or need data recovery services.

Frequently Asked Questions

What causes Windows error code 0x0000005A?
Error 0x0000005A is caused by critical Windows services failing to start, usually due to corrupted system files, driver conflicts, malware infections, or registry corruption. It can also result from hardware issues like failing hard drives or RAM problems.
Can I fix error 0x0000005A without losing my files?
Yes, most fixes like SFC scan, DISM repair, and System Restore preserve your personal files. Even the Windows Reset option has a 'Keep my files' choice. However, always backup important data before attempting major repairs.
Why does error 0x0000005A happen after Windows updates?
Windows updates can sometimes conflict with existing drivers or system configurations, causing critical services to fail. The update process might also reveal existing corruption or compatibility issues that weren't apparent before.
How do I prevent error 0x0000005A from happening again?
Keep Windows and drivers updated, run regular system scans with SFC and DISM, maintain good antivirus protection, avoid installing suspicious software, and create regular system restore points before making major changes.

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