If you encounter a Blue Screen error that points out to the CMUDA.sys, read on as this post will guide you in fixing it. The CMUDA.sys file is a Windows operating system driver file that is related to the USB Device Audio capabilities of a computer. There are times when this file causes Blue Screen error due to some conflicts in RAM or some incompatible firmware or hard disk issues, corrupted drivers or malware infection, and so on.
There are various Blue Screen errors that are related to the CMUDA.sys file such as:
- KMODE EXCEPTION NOT HANDLED
- PAGE FAULT IN A NONPAGED AREA
- IRQL NOT LESS OR EQUAL
- SYSTEM THREAD EXCEPTION NOT HANDLED (CMUSBDAC.sys)
In most cases, the CMUDA.sys file usually triggers the SYSTEM_THREAD_EXCEPTION_NOT_HANDLED Blue Screen error. Although this Blue Screen error may seem complicated, its workarounds are straightforward so you won’t have any problems in following them.
Option 1 – Try to update or rollback your device drivers
If the first option didn’t work for you, then it’s time to either update or roll back the device drivers. It is most likely that after you updated your Windows computer that your driver also needs a refresh. On the other hand, if you have just updated your device drivers then you need to roll back the drivers to their previous versions. Whichever applies to you, refer to the steps below.
- Open the Devices Manager from the Win X Menu.
- After opening the Device Manager, locate the device drivers that are marked with a small yellow exclamation mark icon and right-click on each one to open their Properties. On the other hand, you can also look for sub-entries under Sound, video, and game controllers like the C-Media USB Audio Class
- After that, switch to the Driver tab and click on the Uninstall Device button.
- Follow the screen option to completely uninstall it.
- Finally, restart your computer. It will just reinstall the device drivers automatically.
You can install a dedicated driver on your computer in case you have it or you could also look for it directly from the website of the manufacturer. You can download the as C-Media USB Audio Class driver from the cmedia.com website.
Option 2 – Try to recreate the CMUDA.sys file
The first thing you can try is to recreate the CMUDA.sys file. Every time your Windows 10 PC boots up, it looks for all the system drivers in place and if it is unable to find them, it tries to create them. Which is why if you remove your corrupt driver file, chances are, you might get a fixed file recreated just for you. How? Refer to the steps below.
- Boot your Windows 10 PC in Safe Mode.
- Then open File Explorer and navigate to this location: C:/Windows/System32/drivers
- From there, look for the file named sys and rename it to CMUDA.old.
As you can see, the file’s extension has changed from .sys to .old.
- Now restart your computer and check if the CMUDA.sys Blue Screen error is now fixed.
Option 3 – Run the Blue Screen Troubleshooter
The Blue Screen troubleshooter is a built-in tool in Windows 10 that helps users in fixing BSOD errors. It can be found on the Settings Troubleshooters page. To use it, refer to these steps:
- Tap the Win + I keys to open the Settings panel.
- Then go to Update & Security > Troubleshoot.
- After that, look for the option called “Blue Screen” on your right-hand side and then click the “Run the troubleshooter” button to run the Blue Screen Troubleshooter and then follow the next on-screen options. Note that you might have to boot your PC into Safe Mode.
On the other hand, you can also try running the online Windows 10 Blue Screen troubleshooter from Microsoft. It is a wizard that could help you fix any Stop errors related to the CMUDA.sys file and will offer you helpful links as you use it.
Option 4 – Try running the DISM tool
You can try running the Deployment Imaging and Servicing Management or DISM tool to fix the Wdf01000.sys Blue Screen error. Using this built-in tool, you have various options such as the “/ScanHealth”, “/CheckHealth”, and “/RestoreHealth”.
- Open the Command Prompt with admin privileges.
- Then type in the following commands and make sure to hit Enter right after you type each one of them:
- Dism /Online /Cleanup-Image /CheckHealth
- Dism /Online /Cleanup-Image /ScanHealth
- exe /Online /Cleanup-image /Restorehealth
- Do not close the window if the process takes a while as it will probably take a few minutes to finish.
Option 5 – Run System Restore
Running System Restore might also help in fixing Blue Screen errors related to the CMUDA.sys file.
- Tap the Win + R keys to open the Run dialog box.
- After that, type in “sysdm.cpl” in the field and tap Enter.
- Next, go to the System Protection tab then click the System Restore button. This will open a new window where you have to select your preferred System Restore point.
- After that, follow the on-screen instructions to finish the process and then restart your computer and check if the problem is fixed or not.