Fix BthA2DP.sys BSOD Blue Screen Error in Windows 11 or 10

6 ways to solve BthA2DP.sys Driver_Irql_not_less_or_equal Blue Screen Error in Windows 10 or 11.


Blue Screen appears with crash and shows a message “Your system ran into a problem and needs to restart. We’re just collecting some error info, and then we’ll restart for you”. BthA2DP.sys is such a type of BSOD issue that may occur all of a sudden in Windows 11 or 10.

The error message during the problem is What failed: BthA2DP.sys and this is commonly accompanied by Driver_Irql_not_less_or_equal. First of all, let’s be clear that you don’t need to doubt BthA2DP.sys  to be virus as it is an authentic file from Microsoft Windows. The issue is simply Blue screen bug check error and its reasons are obsolete driver, third-party program, malware, corrupted or missing system files, and faulty Windows image. BthA2DP.sys refers to Bluetooth A2DP Driver and it is located in C:\Windows\System32\drivers folder.

BthA2DP.sys BSOD Blue Screen Error in Windows 10 or 11

Here is how to fix BthA2DP.sys BSOD Blue Screen Error in Windows 11 or 10 –

Way-1: Remove third-party antivirus program

A large number of cases indicate that 3rd party antivirus protection programs, especially Kaspersky and Norton, cause this system crash. Furthermore, during several BSOD, experts have already found that non-built-in applications trigger the issue.

So remove all third-party programs from Windows for a while and check if the Blue screen is fixed. If the error is solved, sacrifice the app or find another similar application and install it for your future work. Follow the guide –

  1. Press Winkey and R.
  2. Type – appwiz.cpl.
  3. Programs and Features window will appear; find the non-built-in antivirus app.
  4. Right click on the program and select Uninstall.
how to fix BthA2DP.sys BSOD Blue Screen Error in Windows 11 or 10
  1. Follow the guide coming on the screen.
  2. Repeat the same steps until all third party programs are not removed.
  3. Restart the machine and check if the BSOD is solved.
  4. In case, Kaspersky is not iunnstalled completely download removal tool and use it. Suppose you have installed other ant-virus app then go to this page and get the related removal utilities from there.

For analysis of the bug check, follow – How to Use BlueScreenView to Detect the Cause of Blue Screen.

Way-2: Modify Registry Entries

IRQL_NOT_LESS_OR_EQUAL BthA2DP.sys failed was a known issue in Windows 10 and an official workaround is available to resolve this stop error. Bugcheck was 0x0000000a and blue screen might be generated on systems where the Bluetooth A2dp profile is affected by specific Configuration service provider policies turned on the device.

This BSOD can be fixed by manually modifying registry as follow –

  1. Click on Search icon located on the Taskbar.
  2. Type regedit.
  3. Hit Enter and select Yes on UAC prompt.
  4. Once on the Registry Editor, browse and reach the string –
  1. Add the following keys to the ServicesAllowedList value –

{0000110a-0000-1000-8000-00805f9b34fb} and


  1. Restart the machine and the issue will be rectified.

Also, you can discover the flaw using WhoCrashed: A Tool to analyze Dump and reveal culprit driver on Windows.

Way-3: Uninstall and Reinstall Bluetooth driver

So far as the reason for BthA2DP.sys Windows 11, Bluetooth driver is in the center too. Therefore, this component needs a solution and in this course, uninstalling and reinstalling is the best one. Hence, move forward with the steps –

  1. Click on Start.
  2. Type – devmgmt.msc.
  3. Select Device Manager from the result.
  4. Find Bluetooth in the list and double-click on it.
  5. Locate the driver creating the issue.
  6. Right-click on the driver and select – Uninstall device.
Uninstall and Reinstall Bluetooth driver to solve bsod
  1. On the warning pop-up, choose “Uninstall”.
  2. Now reboot the computer and navigate to the official website of manufacturer. Download the latest version and install it.

Follow – Dump File Location Windows 11 or 10.

Way-4: Run SFC /Scannow and DISM

Corrupted BthA2DP.sys which is a part of system files is another element to trigger Driver_Irql_not_less_or_equal blue screen error in Windows. The mess-up may start when any third party programs, malware, or obsolete and incompatible drivers create nuisance.

But nothing to bother about while System file checker is available. This tool will scan all the directories for checking corrupted files and once found, it will replace them with the same copy existing in cache folder. This way the corruption is fixed and along with the BSOD or Blue Screen of death will also be solved. Follow the steps –

  1. Click on Start.
  2. Type cmd.exe.
  3. Select Run as administrator.
  4. Now choose Yes from the User account control dialog.
  5. To run the System file checker, type SFC /scannnow.
Run System file checker and Deployment Image Servicing and Management
  1. Hit the Enter key and stay for a few minutes.
  2. When the process is 100% completed, restart your computer.
  3. If BthA2DP.sys blue screen error still persists launch the command prompt with administrative privileges once again, and type the below syntax –
DISM /Online /Cleanup-Image /RestoreHealth
BthA2DP.sys failed
  1. Press Enter to start the Deployment Image Servicing and Management utility. It will take a few minutes so hold on for that time and reboot the system in the end.

Way-5: Run File Signature verification

One of the factors of this BSOD is BthA2DP.sys not signed problem. FSV tool scans all drivers and tells which files are not having digital signatures on Windows. File Signature verification checks the integrity of file system and shows you a list if you follow the steps –

  1. Press Winkey+R.
  2. Type – cmd.
  3. Choose – Run as administrator.
  4. When the command prompt opens up, type Sigverif Run command and press Enter.
  5. Allow File Signature verification to appear and click on Start.
BthA2DP.sys Blue Screen Error
  1. After the verification task is completed a list will prompt displaying Unsigned files.
  2. If you find that BthA2DP.sys is not digitally signed run System file checker using the steps mentioned in Way-4.

Way-6: Unpair and pair the device

When What failed: BthA2DP.sys Driver_Irql_not_less_or_equal Blue Screen error occurs the devices such as headphone, external speaker, etc. paired with Bluetooth stop working. However, mostly this scenario starts because of buggy Windows updates there may be glitches in the connection.

Therefore, unpair all the devices from the Settings field, pair them again, and check if the bug checking is gone –

  1. Right-click on Start and select Settings.
  2. Select Bluetooth & Devices (Windows 11) or “Devices” (Windows 10).
  3. Go to the right pane and click on the 3 dots icon.
  4. Select – Remove device.
remove bluetooth device to fix blue screen bug check error
  1. You will come across a pop-up asking “Are you sure you want to remove this device”; click on Yes.
  2. Now restart the PC and go to – “Settings > Bluetooth & devices”.
  3. Click on – Add device.
  4. Select – Bluetooth.
  5. Select the device and enter the pairing code in the peripheral.

For Windows 10, follow the step-by-step guide – How to Pair And Unpair Bluetooth Devices on Windows 10.

Way-1: Remove third-party antivirus program
Way-2: Modify Registry Entries
Way-3: Uninstall and Reinstall Bluetooth driver
Way-4: Run SFC /Scannow and DISM
Way-5: Run File Signature verification
Way-6: Unpair and pair the device

That’s all!!

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Topics:  Windows
About Sunita
Love to play with Windows 11 and 10. Suggestion - Going for Registry change or system files edit then remember to take a backup or create a restore point before Starting.