What is ACPI.sys Error And How to Fix It on Windows 10 & 11

Last updated on February 9th, 2024 at 02:59 am

ACPI_BIOS_ERROR and other Blue Screen of Death errors can be serious because they will cause your computer to reboot every time they occur. ACPI_BIOS_ERROR can occur due to settings in your system or outdated BIOS versions. It is very important to fix these types of problems as soon as possible since they can sometimes prevent Windows from starting. You will find here detailed information about the various causes of ACPI.sys failed error and how to troubleshoot them on Windows 10 and 11.

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What is ACPI.sys Errors?

BSOD (Blue Screen of Death) crashes, and system freezes are just some of the possible symptoms of ACPI.sys errors. In most cases, these errors result from hardware or software issues that interfere with ACPI.sys’s proper operation.

Why does ACPI_BIOS_ERROR appear?

It’s recommended that you adjust your BIOS settings to resolve this issue, as it appears to be caused by your BIOS settings. It can also be caused by outdated motherboard firmware, so be sure to keep it up-to-date. It is also possible that your device drivers are responsible for this issue, so make sure you are always using the most recent version available. Here are a few common causes:

Outdated or Incompatible Drivers: ACPI.sys failed errors are often caused by outdated or incompatible drivers. It is possible for the ACPI.sys file to conflict with your system drivers if they are not current.
Corrupted System Files: These can result in various problems, such as ACPI.sys failed error. This occurs for many reasons, such as sudden power outages, malware infections, or incomplete software installations.
Faulty Hardware: Don’t forget that malfunctioning hardware, such as a broken hard drive or faulty RAM module, can trigger ACPI.sys failed error. Be sure to rule out hardware issues before you turn your attention to software.
Windows Updates: If you install Windows updates, you may encounter errors. It is possible to run into problems with ACPI.sys due to compatibility issues between the updated system files and ACPI.sys.

With that in mind, let’s look at the step-by-step solutions to fix ACPI.sys errors on Windows 10 and 11.

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How to Fix ACPI.sys Error on Windows 10 & 11

It is necessary to identify and resolve the underlying cause of acpi.sys BSoD errors in a systematic manner. To fix the problem, follow these steps:

Fix 1: Disable AHCI in your BIOS:

Software can communicate with SATA devices using AHCI (Advanced Host Controller Interface). Despite its usefulness, if you experience a Blue Screen of Death as a result of its operation, you will not regret disabling it.

When users disabled AHCI on their Windows 10 and 11 PCs, they reported that the ACPI.sys blue screen of death no longer appeared. It is possible that you, too, could achieve the same result.

Fix 2: Update or Rollback the ACPI Driver

It is either necessary to update or roll back the driver. You need to roll back your ACPI driver if the problem started after you updated it. If not, maybe you can update this driver to the latest version if you haven’t already.

Using the Win+X menu, select Device Manager.
Right-click ACPI.sys and select Properties.
Next, go to the Drivers section. In order to roll back an update, the update must have been recent.
Otherwise, click on the Update Driver tab, and Windows will detect any problems automatically.

It may be helpful if you copy the ACPI.sys system driver from the Windows System32 folder of another machine, install it on your problematic machine and see if that works.

Fix 3: Run SFC Scan

It is generally a good idea to run an SFC scan (System File Checker) when troubleshooting Windows issues, including ACPI.sys errors. Your system will be scanned and repaired if corrupted system files have caused problems.

First, press the Windows key and type cmd into the search box.
Afterwards, to run Command Prompt as administrator, right-click it and select Run as administrator.
When prompted, click Yes.
Enter sfc /scannow at the command prompt.
You need to restart your computer.

Fix 4: Run the Disk Check

It is highly recommended to perform a disk check (CHKDSK) on your system when you are experiencing ACPI.sys failed blue screen of death errors. You can run CHKDSK to inspect and fix issues with the file system on your hard drive, as well as bad sectors.

By pressing Win + X, select Command Prompt (Admin) or Windows PowerShell (Admin).
Run the following command: chkdsk /f
If you press Enter, you will likely receive a message asking whether you want to schedule the check for the next restart. To confirm, type Y and press Enter.
You will need to restart your computer. It will start before Windows starts to check the disk.

When CHKDSK runs, it examines the file system in order to find errors and tries to resolve them. You may have to wait a while during this process, depending on the size and speed of your hard drive.

Fix 5: Run a Malware Scan

It is crucial to run a malware scan when troubleshooting system errors, including ACPI.sys failed error. There are many problems that could result from malware or viruses compromising your system’s stability and security.

Simply press the Windows key, type Windows security, and click the Open button.
In the Virus & Threat Protection section, click Scan options.
Select Full Scan and click Scan now.
An infected file search will be conducted by the Scan, and those files will be listed. To fix the problem, delete them.

Fix 6: Run Troubleshooter

Windows Troubleshooters are designed to automatically identify and fix common problems related to specific components or functionalities. So, let’s see how:

Open Windows Settings.
Tap on the System.
Now, click on Troubleshoot.
Afterwards, hit the Other Troubleshooters.
Hit the Run button located in front of the Program Compatibility Troubleshooter.
Now, wait until the process finishes and reboot your device. Then, check if the ACPI_BIOS_ERROR gets resolved.

Fix 7: Check for the Windows OS Update

You must check your operating system for updates in order to troubleshoot and maintain its health. There are a variety of system issues that can be resolved through regular system updates, including ACPI.sys failed error. However, to check for Windows updates, follow these steps:

First, launch the Settings by pressing Win + I.
From the left-hand menu, select Windows Update.
Select Check for updates from the menu.
To install updates, click Install Now or follow the on-screen instructions.
In order for the changes to take effect, your computer must be restarted after installing updates.

Your system’s stability and performance can be improved by Windows updates that improve system files, drivers, and various components. It is possible that an update will fix ACPI.sys failure BSOD errors if they are related to known issues.

Fix 8: Perform a System Restore

If you suspect the issue began after a recent change or update, you can resolve the ACPI.sys failed error by performing a System Restore. It allows you to undo changes to your system that may have caused the problem by restoring your system to a previous state. To perform a System Restore, follow these steps:

Open the Windows search, type Windows Restore, and hit enter.
Then, hit the Reset PC next to Reset This PC.
Then, perform the on-screen instructions.

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Using these comprehensive steps, you can solve ACPI.sys failed error on both Windows 10 and 11. Whenever you make significant changes to your system, make sure you backup your data. However, if you are still experiencing the ACPI error after performing the above steps, make sure to get in touch with the Microsoft support team and ask for help. That’s it from our side. Leave a comment below and let us know what you think.

What is ACPI.sys Error And How to Fix It on Windows 10 & 11

What is ACPI.sys Errors?

Why does ACPI_BIOS_ERROR appear?