Fix: ACPI_BIOS_ERROR BSOD in Windows 10

In this fix guide, we’ll be talking about the nasty ACPI_BIOS_ERROR in Windows 10. It has got a bug-check value of 0x000000A5. This particular BSOD indicates some compliance issue of the ACPI or Advanced Configuration and Power Interface BIOS of the system with the ACPI specification.

There are several things that can potentially lead to this BSOD – missing files, obsolete driver, delay in a system update, missing DLL files, and more. The ACPI BIOS ERROR is somewhat different and it interrupts your work during the installation of new hardware or software. In this article, we have included the simpler workaround that even entry-level users can try. These are the effective workarounds and explore the respective methods easily –

ACPI_BIOS_ERROR BSOD in Windows 10 Solutions

Here is How to Fix ACPI_BIOS_ERROR BSOD in Windows 10 –

1] Install all the latest updates on your system

To have a smoothly functioning and troubleless PC, keeping the system updated would be a great idea. Many a time, users keep postponing updating the device and this leaves it with bugs and problems. Basically, the latest updates contain added security against potential threats and may contain the fix for the issues causing the ACPI_BIOS_ERROR as well. That’s exactly why updating Windows can be a good way to avoid moreover resolve many kinds of problems with the computer.

While you download and install the updates, it might be very helpful to have a high-speed internet connection. It will avoid troubles caused by incomplete or partial download and installation etc. Given are the steps to check for any pending download and install them –

Step-1: Enter the shortcut keys “Wind logo + I” on your keyboard to open Windows Settings app on your computer.

Step-2: After the interface shows up, you need to click on the Update & Security category. Then select Windows Update subsection that you see on the left-hand side.

Step-3: On the adjacent pane you would probably either view any pending update or the dialog “You’re up to date”. The latter indicates that your system doesn’t have any due updates. Just to be sure, click on Check for updates button. This will trigger a check for any due and new updates.

ACPI_BIOS_ERROR BSOD in Windows 10 Picture 1

Step-4: After the update check is over, you can see if there is any new update. In case your system lists any available patches, click on the ‘Download’ button under them.

Step-5: Windows will carry out the rest of the process by itself. When prompted, allow the system to restart to apply the update fixes and changes.

This should resolve the issue in most cases if a delay in the update was causing the ACPI BIOS ERROR.

2] Disconnect additional Hardware Accessories and update hardware drivers

Users often face blue screen issues like ACPI_BIOS_ERROR as a result of some compatibility issues with some hardware. The situation can be quite a lot frustrating, but then you have an easy way out of the scenario. Simply disconnect the external device – it should resolve the situation. You will be able to reconnect the same soon after you see the problem resolved. Here is what you must do –

  • If any external hardware item is connected to the device, disconnect and keep it safe.
  • Just Restart Windows 10 PC. When the reboot completes, check if the issue is still there.

Also, we suggest you go to the hardware manufacturer’s website and look for any updates available for its driver.

3] Scan and clean malware to Fix ACPI_BIOS_ERROR

We don’t probably have to point out that any kind of malware which enter into the system can cause some kind of trouble for the PC and its users. It is important for you to make sure that you frequently scan for any kind of threats or malware in the system. Also, you must Clean Windows 10 PC on Malware or Virus attack. Some of their kind can be of serious harm to the functioning of the system. Moreover, disk corruption from malware attacks is one of the basic causes of ACPI BIOS ERROR BSOD.

Thankfully for us, Microsoft’s operating systems now have a default anti-malware and security tool, Windows Security (which as Defender). You can easily scan and erase any malware on the system with this security app. Here is what you need to do –

  • Press Windows + S keys to launch a taskbar search.
  • Type Security in the text typing area and load the results. Then, open Windows Security from the results
  • In the app interface, choose the Virus & threat protection option. On its adjacent pane, click on the link ‘Scan options’.
  • Now you are looking to select the radio beside the Full scan option. Finally, hit the Scan now button to initiate the detection.
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  • This process will search for viruses in every file in the system and the entire process might take several minutes.
  • After the process ends, you will be able to see the scan result on the screen. In case any malware is discovered in the scan process, click on the Clean threats button.
  • You might then be lead to a page where you will come across three more options, from which you must select Remove first and then hit Start actions to eradicate all the virus components.

4] Deal with system memory issues

Memory issues can cause a lot of troubles on a computer. Problems with the Random Access Memory (RAM) or any such memory problem can cause sloppy working as well as ACPI BIOS ERROR including other blue screen errors. The default Windows Memory Diagnostic Tool is the best utility to manage this kind of troubles. Here are the steps that you must follow along in order to use this utility –

  • First of all, launch the Settings app with the shortcut keys Win + I.
  • On its main interface, type memory in the search box. Then, from the results, select the option that says “Diagnose your computer’s memory problems”. This will instantly show up the “Windows Memory Diagnostic” tool on the PC screen.
  • Thereafter, select “Restart now and check for problems (recommended)” option as displayed in the given figure.
ACPI_BIOS_ERROR BSOD in Windows 10 Picture 3
  • Of course, this will be followed by a restart. After your computer turns back on, a blue screen will be visible and it will scan memory problems.

After the scanning process completes, the system will reboot again automatically. You must be able to find the results of the scan after it restarts.

5] Uninstall the third-party anti-virus to resolve ACPI_BIOS_ERROR

Malware is a total package of problems and you already know that. Several users across the globe use different third-party top free Antivirus tools in order to safeguard the system. Anyway, given that we have Windows Security application (as discussed above) now, it wouldn’t be necessary to use those apps. More importantly, third-party anti-malware can sometimes cause conflicts giving way to ACPI BIOS ERROR. The ideal thing to do in such cases would be removing such third party programs as given below –

  • Firstly, open the Run dialog box by pressing “Win+R” hotkeys.
  • When the Run window opens, type appwiz.cpl in the text-box. Click on the Ok button you see.
  • Programs and Features window would come up. There, find the third-party antivirus programs installed on your device.
  • Select the application(s) and then click on the Uninstall button which you can see in the top ribbon.
  • Then simply follow along the on-screen instructions to uninstall the program completely.

6] Update outdated drivers and fix ACPI BIOS ERROR BSOD

Update any badly functioning old driver – it can be a savior in the context of numerous types of errors and malfunctions in a computer. Outdated drivers can be the root of several errors including ACPI_BIOS_ERROR BSOD. That’s why every pro recommends keeping them up to date. You can check for old drivers and update through the Device Manager. In Windows, the outdated drivers are seen indicated with a yellow mark. Thus, finding the driver that needs an update isn’t too hard. Here are the steps you must follow to update the drivers for fixing ACPI BIOS ERROR –

  • Open Cortana search, type in “devmgmt.msc” followed by a hit on the Enter key.
  • The Device Manager window will open.
  • Then you must check through to see if there is a yellow exclamation mark on any devices listed there. In case there happens to be any, expand that device by clicking on it.
  • As the option expands, make a right-click on its drivers, one by one.
  • From the menu that would appear, choose the option namely Update driver. Thereafter, simply follow along with the instructions coming on display. The system itself will take care of the rest and will get the update for the chosen driver.
ACPI_BIOS_ERROR BSOD in Windows 10 Picture 4
  • Do this for every old driver (or drivers with yellow marks).

Note that you shouldn’t tweak with every random driver. If something goes wrong, you may end up damaging some part of your system. Be careful while you update any drive- especially if you are a rookie computer user.

7] ACPI_BIOS_ERROR fixing by Booting the operating system in Safe Mode

Booting the computer in Safe Mode would enable you to keep operation to minimal and settings to the basic or default ones. This would mean that the default & basic settings and just the important files would be there in operation. Therefore, booting your operating system in a safe mode can help you find out whether the issue is still present while you are on the basic settings. If you find out that there is no problem when you are running in Safe Mode, then probably the issue is not with the primary settings. But it occurs with some of the settings or system changes you made or with some external files you have. Here is how you can proceed –

  • Press the shortcut keys Windows + R in order to quickly open the Run window.
  • When it opens, type msconfig in the text box. Then press the Enter key on your keyboard. This will open the System Configuration window.
  • Navigate to the ‘Boot’ tab in the window.
  • Once it shows up, click on the checkbox corresponding to ‘Safe boot’. Select ‘Minimal’ from the further boot options.
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  • Then, click on the OK button in order to save the changes you made.
  • Thereafter, close the application. Now, you need to restart your device.
  • As your system is restarting, press F8. Select ‘Safe boot’ from the Advanced boot menu.
  • Then, enter Safe Mode and see if the ACPI_BIOS_ERROR persists.

8] Use Blue Screen Troubleshooter

One of the most proven ways of resolving the errors in your computer is troubleshooting. Even better, Windows comes with a special troubleshooter for BSOD issues. You don’t need to search for any extra tool from the Store or do any additional search. However, for Blue screen troubleshooter feature to be there, your system should be on Windows 10 Fall Creators Update or higher. Given below are the steps that you need to follow for using the Window Blue Screen Troubleshooter –

  • Press Windows + I keys in order to open the Settings application on your PC. In there, navigate to the Update & Security category.
  • When it opens, select the Troubleshoot subsection you see on the left-hand side panel.
  • Now what you need to do is scroll down to the Blue Screen option and click on it. As you click on it, the option will expand. Finally, make a click on Run the Troubleshooter button. This will initiate the troubleshooter and will fix the ACPI_BIOS_ERROR in the device.

9] Clear the junk files to get rid of ACPI_BIOS_ERROR

Waste piles in the house can make our lives literally miserable, right? Piling up junk files in your computer system can do the same too. As you do various tasks on the PC and surf through the internet, lots of useless junk and temporary files gather up in the system storage unless you occasionally delete it. Well, most of us don’t clean the computer garbage up. As the cache files and temporary files accumulate, they occupy a lot of space. The result is a low disk space and system efficiency. This, in turn, can give way to a slow speed as well as the blue screen of death problems including ACPI_BIOS_ERROR.

To deal with this situation, you can utilize the Disk Cleanup tool. It can help free up some space occupied by the temporary and junk files. Cleaning up the junk files on the system is one of the proven ways to fix some BSOD issues. Given below are the steps you need to follow for using this utility –

  • In the search box on the taskbar, type the word “cleanmgr”.
  • When the results appear, double-click on the Disk Cleanup Desktop app to open it. A small popup window will appear, requiring you to select a Disk.
  • Select the Disk Drive (for e.g. C:) you want to clean up.
  • Then, in a few seconds (or minutes) your system will calculate and show the total junk-occupied space in your system which you will be able to retrieve through clean up. Hence, click Clean up system files button.
ACPI_BIOS_ERROR BSOD in Windows 10 Picture 6
  • In case you have some important files in the Download folder, uncheck it before proceeding ahead. (A better alternative is to move the important files to another folder beforehand so that you can delete the rest of trash)

10] Remove similar/duplicate applications from your PC

One of the causes of the ACPI_BIOS_ERROR is having duplicate or similar kind of apps. Similar apps can create a conflict if their requests collide. Blue screen errors like ACPI BIOS ERROR can be avoided by removing these duplicate apps from the PC. You can find and uninstall these apps very easily by following the given steps –

Step#1: Perform a right-click on Start and select Apps and features from the Win+X Menu.

Step#2: On the right pane of the subsequent page, find and select the applications which are similar and may create errors. Remove them from your PC by clicking on the Uninstall button on the expanded panel.

Step#3: The desktop will now show some guidelines to uninstall the application(s). Follow them and then reboot the PC.

11] Fix ACPI_BIOS_ERROR by Uninstalling any incomplete Windows update

Another reason your computer is facing issues might be because of the termination of Windows updates before completion. In general, updates install automatically and on their own. Therefore, a bad network connection may interrupt the process and can create trouble.

The best way to get rid of this problem is to uninstall any incomplete Windows update. This is how you can do it –

  • Get access to the Settings app. The shortcut is to press Windows+I.
  • Click on Update and Security. In the left section of the box, select Windows Update.
  • Click on View update history.
  • Underneath it, you will find the option Uninstall updates.
ACPI_BIOS_ERROR BSOD in Windows 10 Picture 7
  • On the Installed updates window, choose the latest installed patch. Hit Uninstall on the top ribbon.

12] Reducing computer fatigue by using Disk Checking

Running your system continuously for a long time may also cause blue screen errors like ACPI_BIOS_ERROR. Using computer continuously may tire the device which can result in many functional issues including the ACPI BIOS ERROR.

Disk Checking Utility can help you resolve this issue very easily. Try the following steps, if you have been using your computer for a long time and facing some issues –

  • Go to the Search box and type ‘cmd’ in it. In the search results, you will find Command Prompt.
  • Right click on it and then click on Run as administrator.
  • The OS will prompt to confirm allowing the program to make changes. Click on Yes and grant the permission to make changes.
  • The Elevated Command Prompt window will now open where you need to type the following syntax and click on Enter –

chkdsk C: /f/r/x

  • This command will open the Disc Checking Utility and the process of disc checking will start. Wait till it completes.
  • Restart the PC and check if the issue is fixed.

13] Restoring the system to any restore point

It is very much possible that any recent activity may have resulted in the blue screen error. In this case, you can always restore your system and undo all the recent activities. This option generally resolves the problems your PC is facing and brings your system back to error-free condition. However, the disadvantage of going for ‘System Restore’ is that it will also erase your recent work and files. So you need to remember this before choosing to restore your system. It would be better if you take a backup of your recent works.

To reset or restore your system follow the given steps –

  • Go to the Search box in the taskbar and search for System Restore.
  • From the search results, select System Restore. Enter the password, if any.
  • Then, just choose a restore point and restore the system by going through the guidelines displayed on the screen.

14] Repair the corrupted Windows System components to fix ACPI_BIOS_ERROR

ACPI_BIOS_ERROR can also be due to missing DLL files and corrupted Windows components. But no worries, as we have a solution for this case as well. “System File Checker” can help us in recovering the missing DLL files and mend the corrupted Windows system.

Here’s how you can use the System File Checker –

  • Right-click in an empty space in your taskbar. A menu will pop up. There, select Task Manager from the menu.
  • Under the File menu, click on ‘Run a new Task‘.
  • Checkmark the box saying “Create this task with administrative privileges”. In the text box type ‘cmd‘ and click OK.
  • The Command Prompt with the admin rights will now open. Type the following command and press Enter –

Sfc /scannow

The scan for corrupted elements will start now. You may take a power nap as it can take some time. The System File Checker will find the faulty Windows components and repair them by itself. Also, any missing files would be put in place.

After the process is complete, reboot your system and check if the error is fixed.

15] Update BIOS after removing the SSD (in Samsung computers)

Many of the Samsung laptop users reported facing troubles in Windows 10 because of ACPI_BIOS_ERROR BSOD. As per what the suggested, what worked for them is removing the SSD drive and restoring the Windows 10. So if you are a Samsung user, facing ACPI BIOS ERROR BSOD, this workaround may work for you. In order to do that, follow along with these steps –

  • Locate your SSD drive & safely disconnect it.
  • Start your computer. You would probably see Samsung prompt requiring you to press F4 in order to start the Recovery Mode. Press F4.
  • Quickly reconnect the SSD drive back.
  • Select the option for restoring. The process may take a few seconds or minutes. Wait for it to complete.
  • Finally, you need to run the SW Update software and then install the BIOS update.

Note: Installing BIOS isn’t recommended for beginner users as it is an advanced procedure. If any part of the update installation goes wrong, you will end up causing permanent damage to your PC. If you are performing the update, be sure to go through the motherboard manual thoroughly for detailed instructions and guidelines.

16] Prevent automatic shutdown/restart of your PC

It can be very annoying and irritating if your PC shuts down while you are working. A lot of important data can be lost. BSOD (Blue Screen of Death) errors can frequently cause automatic shutdowns or restarts and can cause loss of data.

If you face any issue or error, you can prevent these auto shutdowns by following the given steps –

  • You need to save your work first. After saving it, close the application and go to the Desktop. If the system is not responding try pressing Windows +D to go to the Desktop.
  • On the desktop, right click on This PC icon. From the fly-out menu, select Properties.
  • The System Window will appear. Then, on the left section of the window, click on ‘Advanced System Settings‘.
  • The System Properties window will appear now. In the bottom section of it, click on Settings under “Startup and Recovery”.
  • You will see the Startup and Recovery window after the click. Under the ‘System Failure‘ section, uncheck the Automatically restart option.
  • Finally, click on OK.
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This will prevent your system to shut down automatically in case of any failure and you can save all your work before trying to fix the issue or error in your system.

1] Install all the latest updates on your system
2] Disconnect additional Hardware Accessories and update hardware drivers
3] Scan and clean malware to Fix ACPI_BIOS_ERROR
4] Deal with system memory issues
5] Uninstall the third-party anti-virus to resolve ACPI_BIOS_ERROR
6] Update outdated drivers and fix ACPI BIOS ERROR BSOD
7] ACPI_BIOS_ERROR fixing by Booting the operating system in Safe Mode
8] Use Blue Screen Troubleshooter
9] Clear the junk files
10] Remove similar/duplicate applications from your PC
11] Uninstall any incomplete Windows update
12] Reduce computer fatigue by using Disk Checking
13] Restore the system to any restore point
14] Repair the corrupted Windows System components
15] Update BIOS after removing the SSD (in Samsung computers)
16] Prevent automatic shutdown/restart of your PC

That’s all!!

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Topics:  Windows