Fix: ‘Apc Index Mismatch’ BSOD Error on Windows 11/10

Stop blue screens in their tracks! This guide shows you how to diagnose and fix the 'Apc Index Mismatch' error and save your Windows sessions.

There are many things that can cause the BSoD (blue screen of death), which is one of the worst mistakes in Windows. APC Index Mismatch is one of these BSoD errors that is showing up more often these days. When it does, it shows up how to Fix ‘Apc Index Mismatch’ BSOD Error on Windows 11/10.

It seems like this blue screen error makes your computer crash out of the blue, and you can’t get to anything on your device. It’s possible that you will lose some of your work, and the mistake may be caused by a bigger problem in your system.

What are APCs?

APCs are small threads that the Windows kernel uses to stop another thread from running and do a certain job before giving control back to the first thread. They are in charge of many things, such as system alerts, communicating with device drivers, and asynchronous I/O activities.

Why ‘Apc Index Mismatch’ BSOD Error on Windows 11/10

  • Faulty Device Drivers: This problem can be caused by device drivers that are out of date or don’t work with your computer. It is very important to keep your drivers, especially your graphics and system drivers, up to date.
  • System Files That Are Broken: If important system file are broken, it can cause many problems, such as APC_INDEX_MISMATCH. The System File Checker (SFC) tool can help you find and fix system files that are damaged.
  • Software that Doesn’t Work with Your Version of Windows: Some software programmes or third-party tools might not work with your version of Windows, which can cause problems. Make sure that all of your software works with the version of Windows you’re using.
  • Infections with malware or viruses: Malicious software can damage system files and lead to errors like APC_INDEX_MISMATCH. Use a reliable antivirus software to check your system for malware and viruses on a regular basis.
Fix 'Apc Index Mismatch' BSOD Error on Windows 11/10
  • Overclocking: If you push your CPU or GPU past their safe operating range, the system could become unstable and make mistakes. If you overclocked your gear, you might want to set it back to its original settings.
  • Windows Updates: Make sure that all of the updates for your Windows system are installed. Microsoft usually sends out updates that fix bugs and add security.

Fix: ‘Apc Index Mismatch’ BSOD Error on Windows 11/10

Check for Disk Errors:

  1. Open Command Prompt as an administrator.
  2. Type chkdsk /f and press Enter.
  3. Reboot your computer to allow CHKDSK to scan and fix any disk errors.

Change RAM Frequency

Users sometimes change the speeds of RAM and processors to get better performance when working or playing games. This can cause the system to crash or freeze in different ways. So, you shouldn’t change the system’s frequencies until you know everything there is to know about the niche.

Perform Windows Reset

  1. Pick up the phone and press Windows + I to get to Settings. The window shown below will pop up. “Update & Security” is the link to click.
  2. There will be a chance. When you see “Reset this PC,” click on “Get started.” That’s it!
  3. A conversation box will appear, as shown in the picture below. Pick “Keep my files.”
  4. Click “Local reinstall” after that.
  5. Please click on “Next” as shown in the picture below.
  6. Just click “Reset” to start over with Windows 10.

Disable Realtek HD Audio Manager

  1. Press the Ctrl, Alt, and Del keys on your keyboard at the same time to open the Task Manager.
  2. On the opening tab, you can see a list of programmes that run at opening.
  3. Click on the list and look for Realtek HD Audio Manager.
  4. Right-click on the name of the app and choose “Disable” from the menu that comes up.

Run Windows Memory Diagnostic

  1. To open the Run box, press Win + R.
  2. Press Enter after typing mdsched.exe.
  3. You can choose to restart your machine and look for issues with the memory.


What is the blue screen stop code APC index mismatch?

If you use an old machine, you might get the APC Index Mismatch Windows 10 problem. But it’s also possible that the problem started after you updated Windows because of mistakes or problems with compatibility that you didn’t expect. In this case, which doesn’t happen very often, you need to remove the new upd

What is the blue screen BSOD error?

There is a problem with the Windows kernel that causes a BSOD. This could be a problem with the hardware or the Windows drivers. It’s not an app crash. Windows will keep running even if the browser crashes. While apps do run, they don’t often cause a blue screen because they are part of the running system.

Why is Windows 11 blue screen so much?

Blue screen mistakes can be caused by many things, such as broken hardware, driver problems, damaged system files, and so on. To help, here are some ideas: How to Use Event Viewer: In order to get to the Power User window, press Windows + X. Next, click Event Viewer to open the Application.

Editorial Staff
Editorial Staff
The Bollyinside editorial staff is made up of tech experts with more than 10 years of experience Led by Sumit Chauhan. We started in 2014 and now Bollyinside is a leading tech resource, offering everything from product reviews and tech guides to marketing tips. Think of us as your go-to tech encyclopedia!


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