Microsoft Windows Error Code 0xC000002B: How to Fix It

Medium 30-60 minutes Critical Severity Verified July 2026
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Error Code
0xC000002B
Brand
Microsoft Windows
Product Type
operating_system
Severity
Critical
DIY Difficulty
Medium
Estimated Fix Time
30-60 minutes
Error code 0xC000002B (STATUS_PARITY_ERROR) indicates a memory parity hardware error. This means your computer's RAM has detected a data integrity problem, often due to a faulty memory module, incorrect BIOS settings, or overheating. This guide provides step-by-step solutions to diagnose and fix the issue.
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Tools You'll Need

How to Fix Error Code 0xC000002B

  1. Power Off and Reseat RAM Modules

    Ensure PC is unplugged and you are grounded to prevent electrostatic damage.

  2. Test with a Single RAM Stick

  3. Run Windows Memory Diagnostic

    Back up important data before running lengthy diagnostics.

  4. Check BIOS/UEFI Memory Settings

    Changing BIOS settings can affect system stability; default settings are safer.

  5. Update BIOS/UEFI Firmware

    Do not power off during a BIOS update; it may brick your motherboard.

  6. Replace Faulty RAM Module

    Power off and unplug before handling RAM.

Parts You May Need

RAM module (DDR4 or DDR5)
Check Price on Amazon
RAM module (DDR4 or DDR5)
Check Price on Amazon
RAM module (DDR4 or DDR5)
Check Price on Amazon
RAM module (DDR4 or DDR5)
Check Price on Amazon
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When to Call a Professional

If you have reseated RAM, tested each stick, run diagnostics, and updated BIOS without success, the issue may be a faulty motherboard or CPU memory controller. A professional technician can run advanced diagnostics and replace components.

Frequently Asked Questions

What causes error 0xC000002B in Windows?
Error 0xC000002B is caused by a memory parity hardware error, typically due to faulty RAM, incorrect BIOS settings, overheating, or a failing motherboard or CPU memory controller.
Can I fix error 0xC000002B without replacing hardware?
Sometimes. Reseating RAM, clearing CMOS, disabling XMP, or updating BIOS can resolve the error if it's due to configuration issues. If hardware is faulty, replacement is necessary.
Will error 0xC000002B damage my computer?
The error itself won't cause damage, but underlying hardware issues (like overheating or failing RAM) can lead to data corruption or system instability if not fixed.
How do I run the Windows Memory Diagnostic?
Press Windows + R, type 'mdsched.exe', and press Enter. Choose 'Restart now and check for problems'. The PC will reboot and run the test. Results appear after logging in again.
Is error 0xC000002B a virus?
No, it's a hardware error related to memory parity. However, malware can sometimes cause similar symptoms. Run a virus scan if other fixes don't work.

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