Resolving Windows Error Code 0xc0000098 Linked to ACPI.sys
Experiencing a blue screen crash at startup due to error code 0xc0000098 can be both frustrating and daunting, particularly when it stems from the ACPI.sys driver. This issue commonly affects unsupported versions of Windows 11 like 23H2 and 22H2 or even supported versions, including 24H2, where file corruption may occur. While Microsoft strives to push fixes, user intervention can safeguard your system against these crashes. Here’s a comprehensive guide to prevent and tackle this issue head-on.
Understanding the Causes of ACPI.sys-Related Error Code 0xc0000098
The Advanced Configuration and Power Interface (ACPI), embodied in the ACPI.sys driver, is crucial for power management and Plug and Play device detection in Windows environments. Located in C:\Windows\System32\Drivers, this driver’s corruption can render your PC unbootable.
Commonly, error code 0xc0000098 is initiated by problematic updates that overwrite essential files, potentially causing irreparable damage. Additionally, malware threats, notably rootkits, and fileless Trojans, may target this critical component. For instance, a significant wave of this issue emerged following the installation of update KB5058405 on May 31, 2025, pushing users into a recovery error screen during startup:
Your PC/Device needs to be repaired. The operating system couldn’t be loaded because a required file is missing or contains errors. File: ACPI.sys Error code: 0xc0000098
Although Microsoft released a hotfix for some versions, the best strategy remains ensuring the integrity of the ACPI.sys file. Below is a systematic approach to back up and validate your ACPI.sys driver.
Warning: Attempting to modify the ACPI.sys file directly could lead to additional crises in your system. Always follow recommended practices for safety.
Step 1: Validate the ACPI.sys Integrity Using PowerShell
Begin by launching the PowerShell window with administrator privileges. This step is critical for executing commands that will check your system files. Enter the following command to generate the file hash for ACPI.sys:
Get-FileHash C:\Windows\System32\drivers\ACPI.sys
Upon executing this command, you’ll receive a 64-character alphanumeric string. Store this hash for later reference. This diligent validation ensures your system remains stable, preempting boot issues related to file corruption.
Step 2: Create an ACPI.sys Registry Backup
This process will serve you well in regaining access after boot failures associated with error code 0xc0000098. Start by opening Registry Editor. You can quickly access it by typing regedit in the search bar or the Run dialog.
Navigate to this registry path:
Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ACPI
Within Registry Editor, click File > Export. Create a.reg file—label it “ACPI” for ease. This backup can be stored on a USB drive or safely in a cloud service. For local storage, consider a folder named “Backup” for clarity.
In case of a blue screen during startup, launch your Windows Recovery Environment. The simplest method is to power on your computer while immediately pressing the designated boot key (like F2, F6, or Esc, contingent on your device model).Navigate via Troubleshoot > Advanced Options > Command Prompt. Type regedit to open the Registry Editor again. Now, select File > Import to restore the stored registry file.
This action successfully reinstates the values from your backup reg file, securing the registry settings for ACPI.sys. Restart your device, and the corrected settings ought to enable normal operation.
Step 3: Explore Additional Solutions
While maintaining a safe backup of ACPI.sys is pivotal, employing preventive measures strengthens protection against potential issues. Keeping Secure Boot activated is highly recommended. It can be enabled via the Windows Security app (Device Security > Secure boot should read as “On”).Users with older devices may access Secure Boot through UEFI settings.
Though backing up ACPI.sys often is the most effective way to prevent error code 0xc0000098, other startup error types such as Ntoskrnl.exe errors, BAD SYSTEM CONFIG INFO, and CRITICAL PROCESS DIED can also lead to similar blue screens. Performing a DISM/SFC check can further ensure that all System32 components, including ACPI.sys, are intact and functioning correctly. These commands are straightforward and highly effective for resolving many system-level issues.
Frequently Asked Questions
1. What does error code 0xc0000098 signify?
Error code 0xc0000098 indicates that a required file (specifically ACPI.sys) is missing or corrupted, leading to boot failures and blue screen crashes in Windows.
2. How can I tell if my ACPI.sys file is corrupted?
You can validate the integrity of ACPI.sys by using PowerShell commands to generate and compare the file hash. Any discrepancies indicate potential corruption.
3. What preventive measures can I take to avoid encountering error code 0xc0000098?
Keeping your system’s Secure Boot feature enabled and regularly backing up critical system files, especially ACPI.sys, can significantly reduce the likelihood of experiencing this boot error.
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