How to Fix Code 41 Error in Device Manager
The Code 41 error will almost always display in the following way:
A Code 41 error is caused by a hardware device that's been removed after the driver was loaded or by an issue with the device driver itself.
How to Fix a Code 41 Error
1. There is always the remote possibility that the Code 41 error you're seeing was caused by some temporary issue with Device Manager. If so, a simple reboot might fix the Code 41.
2. Update the drivers for the device. Installing the latest manufacturer supplied drivers for a device with the Code 41 error is a likely fix for this problem.
3. Did you install a device or make a change in Device Manager just before the Code 41 error appeared? If so, it's likely that the change you made caused the Code 41 error. Undo the change if you can, restart your computer, and then check again for the Code 41 error.
4. Roll back the driver to a version prior to your update.
5. Use System Restore to undo recent Device Manager related changes.
6. Delete the UpperFilters and LowerFilters Registry Values.
A few of the more common Device Manager error codes that are often caused by UpperFilters and LowerFilters issues include Code 19, Code 31, Code 32, Code 37, Code 39, and Code 41.
Removing the UpperFilters and LowerFilters values in the Windows Registry is easy.
1. Press the
keys to open Run, then type regedit in the Run box. This will open Registry Editor.
2. Expand the "folders" until you reach the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class registry key.
3. Click on the > or + icon next to the Class key to expand it. You should see a long list of subkeys open up under Class that look something like this: {4D36E965-E325-11CE-BFC1-08002BE10318}.
4. Determine the Correct Class GUID for the Hardware Device. Using this list, find the correct Class GUID corresponding to the type of hardware that you're seeing the Device Manager error code for. For example, let's say your DVD drive is showing a Code 41 error in Device Manager. According to the list above, the GUID for CD/DVD devices is 4D36E965-E325-11CE-BFC1-08002BE10318.
Once you know this GUID, you can continue to Step 5.
5. Click the registry subkey corresponding to the device's Class GUID that you determined in the last step.
6. In the results that appear on the window on the right, locate the UpperFilters and LowerFilters values.
7. Right-click on UpperFilters and choose Delete.
8. Repeat Step: 7 with the LowerFilters value.
9. Close the Registry Editor.
10. Restart your computer.
11. Check to see if deleting the UpperFilters and LowerFilters registry values solved your problem.
A problem with the device itself might be causing the Code 41 error so you might need to replace the hardware.
Did you find this tutorial helpful? Don’t forget to share your views with us.
A Code 41 error is caused by a hardware device that's been removed after the driver was loaded or by an issue with the device driver itself.
How to Fix a Code 41 Error
1. There is always the remote possibility that the Code 41 error you're seeing was caused by some temporary issue with Device Manager. If so, a simple reboot might fix the Code 41.
2. Update the drivers for the device. Installing the latest manufacturer supplied drivers for a device with the Code 41 error is a likely fix for this problem.
3. Did you install a device or make a change in Device Manager just before the Code 41 error appeared? If so, it's likely that the change you made caused the Code 41 error. Undo the change if you can, restart your computer, and then check again for the Code 41 error.
4. Roll back the driver to a version prior to your update.
5. Use System Restore to undo recent Device Manager related changes.
6. Delete the UpperFilters and LowerFilters Registry Values.
A few of the more common Device Manager error codes that are often caused by UpperFilters and LowerFilters issues include Code 19, Code 31, Code 32, Code 37, Code 39, and Code 41.
Removing the UpperFilters and LowerFilters values in the Windows Registry is easy.
1. Press the
keys to open Run, then type regedit in the Run box. This will open Registry Editor.2. Expand the "folders" until you reach the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class registry key.
3. Click on the > or + icon next to the Class key to expand it. You should see a long list of subkeys open up under Class that look something like this: {4D36E965-E325-11CE-BFC1-08002BE10318}.
Note
Each 32-digit subkey is unique and corresponds to a particular type, or class, of hardware in Device Manager.
4. Determine the Correct Class GUID for the Hardware Device. Using this list, find the correct Class GUID corresponding to the type of hardware that you're seeing the Device Manager error code for. For example, let's say your DVD drive is showing a Code 41 error in Device Manager. According to the list above, the GUID for CD/DVD devices is 4D36E965-E325-11CE-BFC1-08002BE10318.
Once you know this GUID, you can continue to Step 5.
5. Click the registry subkey corresponding to the device's Class GUID that you determined in the last step.
6. In the results that appear on the window on the right, locate the UpperFilters and LowerFilters values.
Note
If you don't see either registry values listed, this solution isn't for you.
7. Right-click on UpperFilters and choose Delete.
8. Repeat Step: 7 with the LowerFilters value.
9. Close the Registry Editor.
10. Restart your computer.
11. Check to see if deleting the UpperFilters and LowerFilters registry values solved your problem.
A problem with the device itself might be causing the Code 41 error so you might need to replace the hardware.
Did you find this tutorial helpful? Don’t forget to share your views with us.