Solved BSOD ntoskrnl.exe 0xe6 0..0026

Hi,

I'm having frequent BSOD on a Dell Precision 7730 with Windows 11 Professional and latest updates.
Happening mostly when user is away.
Had one BSOD for asmtxhci.sys which seems to be related to ASMedia USB3.0 eXtensible Host Controller. There is no newer driver.

V2 log collector failed so I had to use

Please see screenshots, log and dmp files in:

Hope someone can help.

Best regards

Andy

Those Stop 0xE6 bugchecks are usually caused for two reasons:

1. UEFI firmware; please check for the latest firmware updates from Dell
2. Drivers which use DMA like USB

Where did you check for the driver updates? The Dell support page? If so, Windows Update may offer an updated driver version.

Note: Stop 0xE6 bugchecks can be thrown without the use of Driver Verifier.

Just a quick comment re the above post. Laptop drivers should ALWAYS - and ONLY - be obtained from the website of the laptop manufacturer (Dell in your case).

allan said:

Laptop drivers should ALWAYS - and ONLY - be obtained from the website of the laptop manufacturer (Dell in your case).

Click to expand...

In most circumstances that is very true, however, if Dell haven't released a new driver update in 4 years and there is a bug, then it is permissible to use version offered via Windows Update.

1) Uninstall Bitdefender



2) During the troubleshooting modify the default language to English so that log files can be scanned and read.




3) Run the V2 log collector (make sure that extract all is clicked) > post a V2 share link into the newest post

@zbook
1) isn't installed
2) do you think there is something missing in the shared log files?
3) it didn't run (see screenshots)

@x BlueRobot

1. UEFI firmware; please check for the latest firmware updates from Dell
   1. - used "Dell Command Update", nothing new found (see screenshots)
2. Drivers which use DMA like USB
   1. Where did you check for the driver updates? The Dell support page? If so, Windows Update may offer an updated driver version.

Dell has no compatible drivers, Windows Update finds no newer driver (see screenshots)

The Bitdefender drivers were left over from a prior installation.

The drivers were involved in two of the crashes.

Please run the uninstall tool then post a new V2 share link.


vlflt.sys
bddci.sys

vlflt vlflt c:\windows\system32\drivers\vlflt.sys Dateisystemtreiber Ja Starten Wird ausgeführt OK Normal Nein Ja

bddci BdDci Service c:\windows\system32\drivers\bddci.sys Kerneltreiber Ja Automatisch Wird ausgeführt OK Normal Nein Ja

bddci_core 3.8.12.171 1,51 MB (1.579.632 Bytes) 28.11.2023 10:46 Bitdefender c:\program files\n-able technologies\avdefender\bddci_core.dll

1) Uninstall any of these non-Microsoft software:

a) antivirus
b) firewall
c) drive encryption

2) Make sure that Microsoft defender is on.

3) Modify the default language to English so that the log files can be scanned

4) Run the V2 log collector > post any new error messages or post a V2 share link

andyp said:

Dell has no compatible drivers, Windows Update finds no newer driver (see screenshots)

Click to expand...

Unfortunately, the only other option is to either uninstall that problematic driver - may cause other issues - or roll back to Windows 10 which is the only Windows operating system which Dell officially has provided support for.

zbook said:

The drivers were involved in two of the crashes.

Click to expand...

Is there any evidence for that other than running !thread + dps and then arbitrarily picking any third-party driver which comes up?

zbook said:

4) Run the V2 log collector > post any new error messages or post a V2 share link

Click to expand...

I followed your guide and added a new folder to my share
It also contains a screenshot of an error during execution of V2 log collector

When available update the progress with posts #5, steps 1, 2; #8, steps 1, 2, 3

zbook said:

When available update the progress with posts #5, steps 1, 2; #8, steps 1, 2, 3

Click to expand...

Sorry, I don't understand what you mean.
I did the following:

1. Uninstalled Bitdefender
2. Changed default language to english
3. Checked Microsoft Defender is enabled
4. Run the V2 log collector

Is the log incomplete because of the error?

The DM log collector was posted.

The V2 log collector will collect more files for troubleshooting.




There were multiple drivers in the crashes.


The asmedia and bitdefender drivers were in multiple crashes.

You can monitor for new BSOD or reinstall some of these drivers:

Reinstall:

Chipset drivers





asmthub3 ASMedia USB3.1 Hub Service c:\windows\system32\drivers\asmthub3.sys
asmtxhci ASMedia XHCI Service c:\windows\system32\drivers\asmtxhci.sys

iastorac Intel(R) Chipset SATA/PCIe RST Premium Controller c:\windows\system32\drivers\iastorac.sys

igfx igfx c:\windows\system32\driverstore\filerepository\iigd_dch.inf_amd64_d0b39b11619fd0c4\igdkmd64.sys
ibtusb Intel(R) Wireless Bluetooth(R) c:\windows\system32\driverstore\filerepository\ibtusb.inf_amd64_3a46f7da4fff6cc2\ibtusb.sys

Thank you all very much for your help!

zbook said:

The V2 log collector will collect more files for troubleshooting.

Click to expand...

It is in the shared folder, in a subfolder called "240109 1458 V2 Log Collector"

zbook said:

You can monitor for new BSOD or reinstall some of these drivers:

Click to expand...

I'll do so.

Open administrative command prompt and copy and paste:

msdt.exe -id WindowsUpdateDiagnostic
msdt.exe -id DeviceDiagnostic

Click view detailed information > post a share link


Monitor using reliability monitor:

Could you please open a command prompt window and then enter the following commands:


Please attach the DMACheck.txt file which would have been saved to your Desktop to your next post.

In addition to the above, could you please open Device Manager and find the above drivers, they should be listed under the section for USB controllers. Please let me know the value of the following property under the Details tab:


Source: Enabling DMA remapping for device drivers - Windows drivers

At the end it was the driver of the connected docking station.
Reinstalled and now it is working.
Thanks everybody for the support!