Blue Screen of death - Windows 10


I have had some issue on my PC in the past with blue screen of death. initially folks on here pointed me to my virus tool Norton causing the issue so I changed to bit defender. this was a bit better but still occasional crash. recently I update to to 2020 bitdefender and PC was much more stable working for hours at a time without issue. However last couple of days my problems have become more frequent again and PC is crashing on BOD again.

attached is the most recent mini dumps if anyone would be able to take a look and give me some advise I would be really grateful.



Hi stevenshort123, I am Rob, an independent and a 14 time and dual award MVP specializing in Windows troubleshooting and Bluescreen analysis. Please remember as independents we are not responsible for the development of Windows or the computer hardware and drivers. If you will work with me I will be here to help until the issue is resolved.

Frankly, I do not recommend you use a 3rd party antivirus since Windows Defender is now a true superstar in both protection and compatibility. WD in Windows 8/8.1 & 10 is a full antivirus. Use Malwarebytes as an on-demand scanner only and not running resident at all times. - Jan/Feb 2020

Be sure for any anti-virus/security program you uninstall that you use its maker's removal tool to prevent trouble-causing remnants.

List of anti-malware program cleanup/uninstall tools

Eset - Remove Eset and many other makers/types of antivirus such as McAfee, Symantec/Norton, Avast, and others - also removes many other programs 

Eset - AV Remover - List of removable applications and instructions to run the Eset AV Remover tool program

Norton Removal Tool


BugCheck 139, {4, fffff8044b820ff0, fffff8044b820f48, 0}
Probably caused by : ntkrnlmp.exe ( nt!KiFastFailDispatch+d0 )

ntkrnlmp.exe is a Windows component which means something else drove it into Fault.

BugCheck 3B, {c0000005, fffff8012b140921, ffffda00ae77f930, 0}
Probably caused by : memory_corruption ( nt!MiDemoteCombinedPte+51 )

The further detailed analysis did not help.

ffff8109`f255e9c8  fffff804`4a2f147aUnable to load image \SystemRoot\System32\drivers\iaStorA.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for iaStorA.sys
*** ERROR: Module load completed but symbols could not be loaded for iaStorA.sys iaStorA+0xe147a

fffff804`49e80000 fffff804`49e89000   bdelam.sys <-- BitDefender

fffff804`4a8c0000 fffff804`4a932000   gemma.sys <-- BitDefender

iaStorA.sys Intel RST (Rapid Storage Technology) driver

1. Run the Intel Driver and Support Assistant.

Intel Driver and Support Assistant <-- run this after checking with System/Motherboard Maker

Intel Download Center

Intel - Support

Intel - Forums

2. BitDefender is either the cause or it helping to mask the cause. Fully uninstall BitDefender and use only Windows Defender.

3. Check with ASUStek Support, their on-line documentation and drivers, and ask in their forums about any known issues. Update the BIOS, low-level chipset drivers, and the major on-board and separate device drivers (see driver update methods below).

BiosVersion = BU403UA.312
BiosReleaseDate = 04/18/2019  <-- current BIOS
SystemManufacturer = ASUSTeK COMPUTER INC.
SystemProductName = BU403UA
SystemFamily = BU
SystemVersion = 1.0       
SystemSKU = ASUS-NotebookSKU
BaseBoardManufacturer = ASUSTeK COMPUTER INC.
BaseBoardProduct = BU403UA
BaseBoardVersion = 1.0       
CPUID:        "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz"
MaxSpeed:     2300
CurrentSpeed: 2400

ASUS - Service <-- includes Live Chat  - Chat Icon is on the lower right of the page

ASUStek Support

ASUStek Forums are ZenTalk orROG (Republic of Gamers)

ROG - Republic of Gamers

ASUStek Drivers

4. Run the memory tests (see methods below).

5. As needed use ALL the methods in the troubleshooters below.

6. After ALL the above if needed run Driver Verifier to see if it can indicate a
 CAUSE (see Driver Verifier methods below).


Troubleshoot blue screen errors <-- read this link

3b is usually a graphic's driver (display adapter/video driver), other possibilities
include but are not limited to antivirus/antispyware/security programs and even 
memory (mapping). 

Try removing and reseating the memory and the SSD/hard drive if possible - actually remove and replace - do not just snug. (Of course, remove ALL power prior to opening the case.)

BCCode: 3b    0x0000003b  <-- read this link

BCCode: 139  0x00000139 <-- read this link


This utility makes it easy to see which versions are loaded : 

Run DriverView - set VIEW to Hide Microsoft drivers - update those without 
Dump in their names (and update BIOS and chipset drivers).

DriverView - Free - utility displays the list of all device drivers currently loaded on your system. For each driver in the list, additional useful information is displayed: load address of the driver, description, version, product name, company that created the driver, and more.
For Drivers check System Maker as fallbacks and Device Maker's which are the most current. Right Click the Start Button - Device Manager - Display Adapter - 
write down the make and complete model of your video adapter - double click 
- Driver's tab - write down the version info. Now click UPdate Driver (this may not
do anything as MS is far behind certifying drivers) - then Right Click - Uninstall - 
REBOOT this will refresh the driver stack.

Repeat that for Network - Network Card (NIC), Wifi, Sound, Mouse and Keyboard
if 3rd party with their own software and drivers and any other major device drivers
you have.

Now go to System Maker's site (Dell, HP, Toshiba as examples) (as rollback) and
then Device Maker's site (Realtek, Intel, Nvidia, ATI as examples) and get their latest versions. (Look for BIOS, Chipset, and software updates at System Maker's
site while there.)

Download - SAVE - go to where you put them - Right Click - RUN AD ADMIN - 
REBOOT after each installation.

Always check in Device Manager - Drivers tab to be sure the version you are installing actually shows up. This is because some drivers rollback before the 
latest is installed (sound drivers particularly do this) so install a driver - reboot
- check to be sure it is installed and repeat as needed.

Repeat at Device Makers - BTW at Device Makers DO NOT RUN THEIR SCANNER
- check manually by model.

Manually look at manufacturer's sites for drivers - and Device Maker's sites. 

Memory tests do not catch all errors such as mismatched memory (possible even for sticks that appear to be identical) and when faster memory is placed in the system behind slower memory. So it is best to also swap sticks in and out to check for those even if all memory tests fail to show a problem.

To test RAM check here - let it run 4+ hours or so - over-night is best.   <-- best method

MemTestX86 - Test RAM With


After doing ALL the updates you can, and if the issue continues, then run 
Driver Verifier. 

Driver Verifier can help find some BSOD issues : 

Using Driver Verifier to identify issues with Windows drivers for advanced users

How To Troubleshoot Driver Problems in Windows Vista or 7. (8/8.1 and 10 
are essentially the same).

Using Driver Verifier 

WINKEY + X - RUN - type in -> verifier /reset      hit enter to disable

If Driver Verifier creates a minidump upload it and post the link here so we can 
analyze it.


Running OCCT for Home Use (Free) and the Stress Tests may help indicate a cause.

OCCT - Free for Home use

Running Stress Tests might help indicate a cause - use ALL of these.

PC Stress Test free software for Windows 10

Here to help,


Standard Disclaimer: Those may be non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

Please let us know the results and if you need further assistance. Feedback definitely helps us help all.

Was this reply helpful?

Sorry this didn't help.

Great! Thanks for your feedback.

How satisfied are you with this reply?

Thanks for your feedback, it helps us improve the site.

How satisfied are you with this reply?

Thanks for your feedback.

Solultion 1: Maybe if you haven’t checked your system files, eg, System32. I’d highly recommend to scan your Windows system files. If you have a antivirus like McAfee or AVG antivirus, you can scan your system files. Here are the instructions: 1: open file explorer. 2: select the files in the Windows folder, so to get to that folder, click This PC then click the drive that most likely ends with (C:) then click Windows. 3: Use your antivirus to scan your files. Once your in the Windows folder click home (if it is not showing) then select each folder one by one. 4: Wait for the scan to finish. If your scan takes awhile, don’t panic, this is normal.

Solultion 2: Run CHKDSK /F In the Command Prompt. To open the Command Prompt, Ether way you can get to the Command Prompt. 1: To open the run box, Press Windows logo and R, so Windows logo first then R. So hold the Windows logo key down until you press the R key. 2: Open the start menu ether clicking on the start menu button then scroll down until you see Windows System, then click on Command Prompt.

Solultion 3: Open task manager. Do to that, click on the search button. Note: Your search button may be the Cortana button. Then type in Task manager. You can also access it by the Command Prompt. In the Command Prompt type in taskmgr.

4: Replace your hardware.


6: Contact Microsoft. If the steps above did not work, somebody from Microsoft may be able to help you.

We would like feedback to improve experence!

Ps, Windows 8

Was this reply helpful?

Sorry this didn't help.

Great! Thanks for your feedback.

How satisfied are you with this reply?

Thanks for your feedback, it helps us improve the site.

How satisfied are you with this reply?

Thanks for your feedback.


Question Info

Last updated February 8, 2021 Views 633 Applies to: