How to fix Win32 0x0000008B Error? – Solved

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How to fix Win32 0x0000008B Error? – Solved

How to fix Win32 0x0000008B Error?

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Fixodes Changed status to publish April 8, 2024
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The error code you’re looking for, 0x0000008B, translates to a decimal value of 139 and is associated with the MBR_CHECKSUM_MISMATCH bug check in Windows. This error signifies a critical issue with the Master Boot Record (MBR) of your hard drive.

Understanding MBR_CHECKSUM_MISMATCH Error:

The MBR is a crucial part of your hard drive that contains information about the partitions and the location of the operating system files. A checksum is a value calculated based on the data in the MBR. When Windows tries to boot up, it verifies the MBR checksum. If the calculated checksum doesn’t match the stored value in the MBR, the MBR_CHECKSUM_MISMATCH error occurs. This indicates potential data corruption within the MBR, preventing your system from booting properly.

Causes of MBR_CHECKSUM_MISMATCH:

  • Corrupted MBR: Malware infection, power surges, or improper shutdown can damage the MBR, leading to a checksum mismatch.
  • Incorrect Partition Table: Changes made to the partition table using third-party tools can sometimes cause inconsistencies and checksum errors.
  • Hardware Issues: Faulty hard drive sectors can also corrupt the MBR data and lead to this error.

Here are some steps you can take to fix the MBR_CHECKSUM_MISMATCH error:

Important Note: These steps involve modifying your hard drive partitions and can potentially lead to data loss if not done correctly. Proceed with caution and consider backing up important data if possible before attempting these fixes.

  1. Boot into Repair Mode:

    • You’ll need a bootable Windows installation media (USB drive or DVD) to perform these repairs.
    • Boot your computer from the installation media and choose “Repair your computer” when the option appears.
    • Select “Troubleshoot” > “Advanced options” > “Command Prompt.”
  2. Run Bootrec.exe Commands:

    • In the Command Prompt window, type the following commands and press Enter after each one:

      <code data-test-id="code-content">bootrec /fixmbr
      bootrec /fixboot
      </code>
    • These commands attempt to repair the MBR and boot sector.

  3. Rebuild BCD (if applicable):

    • If the above commands don’t resolve the issue, you might need to rebuild the Boot Configuration Data (BCD).

    • Type the following command and press Enter:

      <code data-test-id="code-content">bootrec /rebuildbcd
      </code>
    • This command scans your system for bootable installations of Windows and allows you to choose which one to add to the BCD.

  4. Check Disk (CHKDSK):

    • After attempting the repairs, it’s recommended to run a chkdsk scan to check for and fix any disk errors:

      <code data-test-id="code-content">chkdsk /r c:
      </code>
    • Replace “c:” with the drive letter of your system drive if it’s different. (Caution: The /r option will attempt to fix errors, which can take time depending on the drive size.)

  5. Advanced Troubleshooting (For Technicians):

    • If none of these steps work, there might be a more severe issue with your hard drive. A technician can use specialized tools to diagnose and potentially recover data or replace the hard drive if necessary.

Additional Tips:

  • Keep your antivirus software up-to-date to prevent malware infections that can corrupt the MBR.
  • Perform regular backups of your important data to a separate storage device.
  • Consider using a surge protector to safeguard your computer from unexpected power surges.

By following these steps carefully, you should be able to fix the MBR_CHECKSUM_MISMATCH error and boot your Windows system successfully. If you’re uncomfortable with these procedures or the error persists, seeking help from a computer technician is recommended.

Fixodes Changed status to publish April 8, 2024
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