Microsoft Windows Error Code 0xC000009E: How to Fix It

Medium 30-60 minutes Medium Severity Verified June 2026
Error Code
0xC000009E
Brand
Microsoft Windows
Product Type
operating_system
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
30-60 minutes
Error code 0xC000009E indicates a device lost power while Windows was accessing it. This usually means a USB device, external drive, or internal component suddenly disconnected or failed. Follow the steps below to identify and resolve the issue.
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Tools You'll Need

How to Fix Error Code 0xC000009E

  1. Disconnect All External Devices

    Save any open work before unplugging devices.
  2. Check for Loose Internal Connections

    Power off and unplug the computer before opening the case. Use anti-static precautions.
  3. Test the Failing Device

  4. Run Windows Memory Diagnostic

  5. Check Power Supply Unit (PSU)

    Only test the PSU if you have experience. Otherwise, consult a technician.
  6. Update Drivers and Windows

    Back up important data before major updates.

Parts You May Need

Power supply unit (PSU)
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Power supply unit (PSU)
Check Price on Amazon
Power supply unit (PSU)
Check Price on Amazon
Power supply unit (PSU)
Check Price on Amazon
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When to Call a Professional

If the error persists after checking all connections and hardware, or if you are uncomfortable opening your computer, contact a professional technician. They can test the PSU and motherboard for faults.

Frequently Asked Questions

What does Windows error 0xC000009E mean?
It means a device lost power while Windows was trying to access it. This often points to a loose or failing device, such as a USB drive, external hard drive, or internal component.
Can a faulty USB port cause error 0xC000009E?
Yes, a faulty USB port or controller can cause intermittent power loss. Try using a different port or testing the device on another computer.
Does error 0xC000009E mean my hard drive is failing?
Not necessarily, but it can indicate a power issue with the drive. Check connections and run a disk check (chkdsk) to rule out drive problems.
How do I fix error 0xC000009E in Windows 10/11?
Start by disconnecting all external devices, then check internal connections. Update drivers and run the Windows Memory Diagnostic. If the issue persists, test or replace the power supply.
Is error 0xC000009E a blue screen error?
Yes, it is a blue screen stop code. The system will restart to prevent damage. Follow the steps above to resolve the underlying cause.