system_thread_exception_not_handled: what failed: igdkmd64.sys

Much appreciate the guidance and help. The key question I have is: does this BSOD appear at this point to be a software or hardware issue? Just asking for an informed opinion/guess.

The current graphics driver (9.17.10.4459) was released in May 2016. No issues until Sept 2017 (about 17 months later). I will "roll back" the driver as you advised, but would point out the reseller's version of Win10 was reinstalled Sep 15, 2017 and on Sep 19 "driver service added." The Sep 19 date would coincide with when I did all "the updates" to Win10 after the new HD was installed. Presumably that means the latest driver was updated to 9.17.10.4459 at that time. The BSOD then appeared on Sep 21. I only point that stuff out as I am speculating and perhaps it hints at something for you.

As for sfc /scannow, etc. I started Task Manager > File > Run new task then checked "create task with admin privileges" and input sfc /scannow. It ran for about 14 minutes and the window disappeared. I did the same for restorehealth and it also disappeared. There was no window to copy and paste back into this thread. Am I missing something?

The pc has now been running quite fine for 6 hours and no BSOD.

Keyboard method to open administrative command prompt:
1) type: win + x (simultaneously)
2) type: a
3) type: alt + y (simultaneously)
The above three steps should open a box with title Administrator: Command prompt
When this box opens type or copy and paste these commands:
1) sfc /scannow
2) dism /online /cleanup-image /scanhealth
3) dism /online /cleanup-image /restorehealth
4) When these have completed > right click on the top bar or title bar of the administrative command prompt box > left click on edit then select all > right click on the top bar again > left click on edit then copy > paste into the thread


10 Ways to Open the Command Prompt in Windows 10

mrag said:

Much appreciate the guidance and help. The key question I have is: does this BSOD appear at this point to be a software or hardware issue? Just asking for an informed opinion/guess.

The current graphics driver (9.17.10.4459) was released in May 2016. No issues until Sept 2017 (about 17 months later). I will "roll back" the driver as you advised, but would point out the reseller's version of Win10 was reinstalled Sep 15, 2017 and on Sep 19 "driver service added." The Sep 19 date would coincide with when I did all "the updates" to Win10 after the new HD was installed. Presumably that means the latest driver was updated to 9.17.10.4459 at that time. The BSOD then appeared on Sep 21. I only point that stuff out as I am speculating and perhaps it hints at something for you.

As for sfc /scannow, etc. I started Task Manager > File > Run new task then checked "create task with admin privileges" and input sfc /scannow. It ran for about 14 minutes and the window disappeared. I did the same for restorehealth and it also disappeared. There was no window to copy and paste back into this thread. Am I missing something?

The pc has now been running quite fine for 6 hours and no BSOD.

Very useful history and does support the theory that the change to the new driver on Sept 19 was the cause of the problem. If that is the case it should be very simple to rollback the driver in Device Manager if you get another BSOD (of course, if it is running fine now you can leave things as they are). Find the graphics/display entry in device manager and double click to open properties view. Look on the Driver tab to check that the driver is the 9.17.10.4459 one. There should be the option to rollback. Select this to revert to the earlier driver you had installed.

Properties indicates I am running video driver 9.17.10.4459 and I can "roll back" (the 'roll back' box is not grayed out). I have NOT done so yet as of course the system has been running perfectly all day. I will attempt "roll back" on the next BSOD.

(my apologies) I had trouble understanding how to get an 'admin command prompt' in Win10. What ultimately worked for me (in case there are others as dense as I am):
-Right click start window in lower left of screen
-Click on Task Manager
-Click on File
-Hold down Ctrl key and click on Run new task
'Administrator' will appear in Command prompt window along top if done correctly.

I subsequently ran the three programs you suggested and was able to copy results. There were seemingly NO problems. The results are included at the bottom of this post.

I am still reluctant to run the BIOS update at this time. This BSOD almost seems to appear once every other day. But IF it happens during BIOS update, couldn't that be a real problem? I'm inclined to think we save that as an action of last resort pending your council.

Sort of rhetorical. Can I be the only person with a Dell Optiplex 790 running Win10 that gets this intermittent BSOD? Just seems odd to me.

---------------------
Microsoft Windows [Version 10.0.15063]
(c) 2017 Microsoft Corporation. All rights reserved.

C:\windows\system32>sfc /scannow

Beginning system scan. This process will take some time.

Beginning verification phase of system scan.
Verification 100% complete.

Windows Resource Protection did not find any integrity violations.

C:\windows\system32>

-------------------------------

Microsoft Windows [Version 10.0.15063]
(c) 2017 Microsoft Corporation. All rights reserved.

C:\windows\system32>dism /online /cleanup-image /restorehealth

Deployment Image Servicing and Management tool
Version: 10.0.15063.0

Image Version: 10.0.15063.0

[==========================100.0%==========================] The restore operation completed successfully.
The operation completed successfully.

C:\windows\system32>

-------------------------------------

Microsoft Windows [Version 10.0.15063]
(c) 2017 Microsoft Corporation. All rights reserved.

C:\windows\system32>chkdsk /scan
The type of the file system is NTFS.
Volume label is Windows.

Stage 1: Examining basic file system structure ...
207872 file records processed.
File verification completed.
4870 large file records processed.
0 bad file records processed.

Stage 2: Examining file name linkage ...
265664 index entries processed.
Index verification completed.
0 unindexed files scanned.
0 unindexed files recovered to lost and found.

Stage 3: Examining security descriptors ...
Security descriptor verification completed.
28897 data files processed.
CHKDSK is verifying Usn Journal...
36486032 USN bytes processed.
Usn Journal verification completed.

Windows has scanned the file system and found no problems.
No further action is required.

243325951 KB total disk space.
33105216 KB in 143071 files.
112144 KB in 28898 indexes.
0 KB in bad sectors.
319135 KB in use by the system.
65536 KB occupied by the log file.
209789456 KB available on disk.

4096 bytes in each allocation unit.
60831487 total allocation units on disk.
52447364 allocation units available on disk.

C:\windows\system32>

Download and install:
The Intel® Processor Diagnostic Tool: The Intel® Processor Diagnostic Tool

Please post an image of the results into the thread.
Take Screenshot in Windows 10 Windows 10 General Tips Tutorials

Please read this link:
FurMark - GPU Stress Test Windows 10 Performance Maintenance Tutorials

Well, that wasn't much fun. I went into Device Manager > Display adapter > Intel HD graphics and then clicked on "roll back driver" which was NOT grayed out and looked active. On clicking it, I was given a pop up soliciting my reason why the roll back-I wrote BSOD and went back and clicked on "roll back driver" (from 9.17.10.4229).

Nothing happened.

I did a restart and checked Device Manager. Same driver although "Events" recorded "Driver service added" yada, yada at the time I clicked on roll back.

The "Roll back driver" option is now grayed OUT. I am at a loss on how to get to the earlier driver.

I cannot now get the two windows you reference however, I had written Went to install the suggested Intel Diagnostic Tool. During install received a pop up saying "the installation of Open CL 16.1.1 appears to have failed ..." however I continued the installation.

The driver prior to 9.17.10.4229 appears to be 9.17.10.3517 available here:
Intel HD, HD 2000/2500/3000/4000 Graphics Driver (except Latitude XT3 tablet) Driver Details | Dell US


Then follow your previous instructions: Open safe mode (F8 ?) with networking > open dell website > find driver to download > download to desktop > uninstall current driver > install new driver.

I have to run out now, may get to this later tonight or tomorrow morning.

Please see methods to open safe mode in this link:
Safe mode in Win 10 - Microsoft Community