Understanding and Fixing Error Code 0xC000026D

Error code 0xC000026D is a common Windows error that often indicates a problem with your system's boot configuration or startup files. It typically manifests as a blue screen of death (BSOD) during the booting process, preventing your computer from loading into the operating system. The BSOD will display the error code 0xC000026D along with a message such as "INACCESSIBLE_BOOT_DEVICE" or "BOOTMGR is compressed".

Causes of Error Code 0xC000026D

Several factors can contribute to this error, including:

  • Corrupted boot files: Essential system files required for booting Windows, like BCD (Boot Configuration Data) or the MBR (Master Boot Record), might be damaged.

  • Hardware issues: Problems with your hard drive, RAM, or other hardware components can lead to boot failures and trigger this error.

  • Malware infection: Viruses or malware can corrupt boot files or alter system settings, causing 0xC000026D.

  • Incorrect BIOS settings: Misconfigured BIOS settings, especially those related to booting order or drive recognition, may result in the error.

Affected Operating Systems

Error code 0xC000026D can occur on various Windows operating systems, including Windows XP, Windows Vista, Windows 7, Windows 8/8.1, and Windows 10.

Programs Commonly Associated with the Error

While this error primarily affects the boot process itself rather than specific programs, you might encounter it when attempting to launch applications that rely heavily on system resources or require a stable boot environment.

How to Solve Errors

Rebuild the BCD

  1. Boot from a Windows installation media (USB or DVD).
  2. Select your language and keyboard layout, then click Next.
  3. Click Repair your computer.
  4. Choose Troubleshoot > Advanced options > Command Prompt.
  5. Type the following command and press Enter:

    • bcdboot C:\Windows /s s: /f ALL

Run Startup Repair

  1. Boot from a Windows installation media (USB or DVD).
  2. Select your language and keyboard layout, then click Next.
  3. Click Repair your computer.
  4. Choose Troubleshoot > Advanced options > Startup Repair.

Check for Hard Drive Errors

  1. Boot from a Windows installation media (USB or DVD).
  2. Select your language and keyboard layout, then click Next.
  3. Click Repair your computer.
  4. Choose Troubleshoot > Advanced options > Command Prompt.
  5. Type the following command and press Enter:

    • chkdsk C: /f /r

Update or Reinstall Drivers

  1. Boot into Safe Mode by pressing F8 during startup.
  2. Access Device Manager (right-click the Start button and choose Device Manager).
  3. Expand categories to identify devices with yellow exclamation marks, indicating driver issues.
  4. Right-click on the problematic device and select Update driver or Uninstall device.

Scan for Malware

Use a reputable antivirus program like Microsoft Defender to scan your system for malware. Download the latest version of Windows Defender from Microsoft's website.

Check BIOS Settings

Enter the BIOS setup by pressing Del, F2, or another key specific to your motherboard during startup. Review settings related to booting order, drive recognition, and other relevant options. Consult your motherboard manual for guidance on BIOS navigation and settings.

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