Those who have experienced frequent BSOD crashes may want to look into APC Index Mismatch as the root cause. Most people who have experienced a BSOD crash say it happened for no reason. Typically, a hardware problem is assumed to be the cause of a Blue Screen of Death (BSOD) crash where the APC index mismatch is reported in the dump file.
There are several possible software causes for a BSOD crash due to APC Index Mismatch. When a user tries to utilise a webcam with Skype, the APC Index Mismatch BSOD frequently appears. Other users have noted that playing games or engaging in other resource-intensive pursuits typically precipitates a Blue Screen of Death (BSOD) APC Index Mismatch crash.
Method 1: Upgrade to the most recent version of Windows 10
Using a webcam in Skype on Windows 10 can cause the APC Index Mismatch BSOD, but it’s a simple matter to resolve. It’s as simple as installing all of Windows’ outstanding updates.
This APC Index Mismatch error was first seen when a Windows update triggered an internal fault that caused Skype to malfunction. Thanks to a Fast Ring build and then, beginning in 2018, a regular Windows Update, the problem was quickly resolved.
Pressing the Windows key plus R will bring up a Run box where you may download and instal the latest version of the Windows 10 operating system. The Windows Update interface can be accessed by pressing the Windows key and typing “ms-settings:windowsupdate” followed by pressing Enter.
In the end, you should select Check for updates and then adhere to the on-screen instructions to complete the update installation. It’s possible that your computer will need to restart multiple times if there are a lot of outstanding updates.
Method 2: Update Your Realtek High Definition Driver.
An old or faulty Realtek High Definition Audio Function Driver appears to be the root cause of the APC Index Mismatch. Reinstalling the Realtek audio driver has worked for several users who were experiencing the BSOD APC Index Mismatch problems.
Visit Realtek’s download website if the APC Index Mismatch Blue Screen of Death is indicating that RTKVHD64.SYS is the cause of your BSOD crashes. To ensure that you have the best possible audio experience, it is recommended that you obtain the most recent Realtek High Definition Audio driver for your computer’s architecture.
As soon as the driver has downloaded, follow the on-screen instructions to instal it, and then restart your computer. Keep an eye out for Blue Screen of Death crashes after the next PC starting. If problems persist despite these measures, then on to the alternatives.
Method 3: Default Audio Driver for Windows
A number of people who have experienced the same problem have found success with a different repair method, which you might try if you think the problem is related to your audio driver. Using the Audiodg.exe file can cause a Blue Screen of Death (BSOD) crash with the APC Index Mismatch error on some laptop models. In most Dell models, this is a common occurrence.
Some customers have reported that the BSOD crashes stopped after they switched from using the Realtek Audio driver to the Windows Base Audio driver. What follows is a brief explanation of the process:
- You may bring up the Run dialogue by pressing the Windows key plus R. Then, hit Enter after typing “devmgmt.msc” to access the Device Manager.
- To access the Sound, video, and gaming controllers submenu, you’ll need to scroll to the bottom of Device Manager and expand the drop-down menu.
- In order to remove Realtek High Definition Audio, right-click it and select “Uninstall Device” from the menu.
- To launch a new Run box, close Device Manager and use the Windows key plus R. Then, press Enter after typing “appwiz.cpl” to access Programs and Features.
- Locate Realtek High Definition Audio Driver in the list of installed programmes and features. Once you’ve found it, select Uninstall from the menu that appears after you right-click on it. The Realtek driver can be uninstalled by following the on-screen prompts.
- Restarting the machine after uninstalling the Realtek driver will let Windows use its default audio driver in its place. Check the Sound, video, and game controller list in Device Manager after the next reboot to ensure that the Windows audio base driver is installed.
- After making sure the Windows audio base driver is installed, keep an eye on your computer to see if the APC Index Mismatch BSOD keeps popping up.
If the APC Index Mismatch BSOD issue and subsequent crash persist, try the additional solutions provided below.
Method 4: Verifying Correct Installation of All Drivers
Hardware breakdown, such as that resulting in an APC Index Mismatch error, is sometimes attributable to a lack of or incorrectly installed drivers. It’s also possible that the APC Index Mismatch BSOD crashes are the result of incompatible hardware that you installed recently.
Let’s check that all installed devices have up-to-date drivers to rule out the likelihood that a malfunctioning driver is to blame for the problem. Using Device Manager is the quickest method for this. Make sure all your drivers are up-to-date by following this easy guide:
- To access the Run command, use the Windows key plus R. Then, press Enter after typing “devmgmt.msc” to launch Device Manager.
- To determine if any of your connected devices have a yellow icon, open Device Manager and look through the list of devices. This usually means the driver is outdated, was installed incorrectly, or isn’t supported by the hardware.
- Right-click on any instances of this type, and select Update Driver from the menu that appears. When Windows Update has finished installing the new driver, you should restart your machine.
- Test the next boot up to see whether you still get the APC Index Mismatch BSOD crashes. Remove the driver and see whether your PC still crashes with the APC Index Mismatch error message. If it does not, you may need to contact the hardware manufacturer for assistance.