Reboots possibly due to Bug Check

I am not sure if this is the proper place to post my issue because it is a reboot, not a BSOD. I am posting here because I think my reboots are due to Event ID 1001 - Bug Check, and this seems to be the place where Bug Check related problems are posted. If this is the wrong place please let me know and I will move this post to General Support.

Windows 10 21H2 Build 19044.1706

I have run the V2 log collector v1.11. It ran OK but seemed to time out at the end. There was a "Remove Item: Access to the cloud file is denied" message in red at the bottom of the text in the Command Prompt window. The log collector Zip file and a screen shot of the Command Prompt window are at the following link.

Dropbox - TEN Forums v2 log collector v1.11 - Simplify your life

Description - Event Viewer is showing that my computer is rebooting in the middle of the night, when it is not being used. After the reboot I am seeing Event ID 6008 (Unexpected Shutdown), Event ID 41 (Reboot without cleanly shutting down), and Event ID 1001 (Bug Check). A MEMORY.DMP fie is generated. After last night's reboot, I also found a PoW32KWatchdog DMP file in c:\Windows\LiveKernalReports with a time stamp showing it was generated shortly after the reboot.

Recent Changes - This started a few days ago, after I updated Realtek drivers for wireless LAN and Bluetooth. I rolled back these 2 driver updates yesterday but it rebooted again last night at 2:14:20 am. The other change I made before this started was updating Samsung Magician from v7.0.1.630 to v7.1.1.820. The new version would hang on drive scan so I uninstalled it and reinstalled the original v7.0.1.630. There are posts on the Samsung forum about this new version of Magician hanging then crashing so I don't think this is the problem, plus I went back to the old version anyway.

Note - The computer is not going to sleep because I use a program called Don't Sleep (Don't Sleep 8.77 Prevent Shutdown, Stand By, Turn Off, Restart) to prevent this. Please let me know what other information I should provide, and if I should move this post to General Support. Many thanks in advance for help with this.

Thank you.

Reinstall Intel UHD Graphics driver with Display Driver Uninstaller program

MrPepka said:

Reinstall Intel UHD Graphics driver with Display Driver Uninstaller program

Thank you.

Is this based on an analysis of the DMP files? I did enable the iGPU on my Intel i7-8700K the day before the reboots started, so this could be the problem. After I enabled it, Intel Driver & Support Assistant prompted me to download and install Intel Graphics – Windows DCH Drivers for Xe Dedicated, 6th-12th Gen Intel Core Processor Graphics, v30.0.101.1960 released May 9, 2022. Is this the wrong driver? Should I reinstall this version again or a different version?

Note - My main GPU is an NVidia Titan which is using driver 30.0.14.7347 released May 16, 2022.. Do I need to do anything with this?

Thanks again.

- - - Updated - - -

Update - I downloaded the Intel UHD630 driver v30.0.101.1960 installation package from Intel and the latest version of DDU (v18.0.5.1). I have not used DDU before when I update drivers so this was my first time using it. I downloaded a DDU guide and did exactly what it said. In Options, I unchecked all of the NVidia items but did check remove "Intel Specific Options - DCH Driver - Remove the Intel Control Panel installed from the Microsoft Store". Maybe that was a mistake? I was not sure if that meant uninstall the Intel iGPU driver and I had not installed any Intel Control Panel from the Microsoft Store. I think this was referring to the Intel Graphics Command Center but I am not sure about this. It was installed, but not from the Microsoft Store. I also checked to remove all AMD specific options (because I don't have an AMD GPU in this machine but used to so thought maybe there were some leftovers.)

Regarding Safe Mode, DDU says its recommended to check "Enable Safe Mode dialog" but then goes on to say "Not recommended until you tested Safe Mode manually". So I opened System Configuration, Boot tab, and checked Safe Boot - Minimal, then rebooted. The computer rebooted into Safe Mode OK. In Safe Mode, I ran DDU again, and double checked the Options. In the pull downs on the right in DDU I selected GPU and Intel, then clicked Clean & Restart. DDU did its thing then rebooted. When it came back up, it seemed to be stuck somewhere between Safe Mode and Normal Boot. Some drivers were loaded, some weren't. I could get to the Internet but I could not open some things in Control Panel. System Restore also would not work.

I opened System Configuration again and ensured that Safe Mode was not checked, rebooted again - same problems. Long story short, I ended up booting into Recovery Environment and doing a System Restore to a Restore Point I made before I tried any of this. That got me back to where I started. I must have done something wrong in DDU. Once I had Windows running normally, I ran the Intel UHD630 driver installation .exe file. It has a check box for Clean Install so I check that. It seemed to delete the old driver then install the new one, which was the same one that I already had. At this point, I will keep an eye on it and see if it reboots in the middle of the night again.

I don't know what I did wrong but obviously I did something wrong. My experience with DDU was not a positive one. Luckily, System Restore at least got me back to square one.

Hmm, and if you have your Intel graphics card turned off, these are also problems?

MrPepka said:

Hmm, and if you have your Intel graphics card turned off, these are also problems?

There were no reboots when the iGPU was disabled in the BIOS. The iGPU had been disabled in the Bios for a long time before I recently enabled it. The reboots started the day after I enabled it so it definitely could be causing the reboots. I am not sure what happened after I ran DDU in Safe Mode. Luckily, I was able to do a System Restore from Recovery Environment.

There is another variable that may be affecting this issue. As I mentioned in my first post, I leave the computer on 24/7 and use a program called Don't Sleep to prevent it from going to sleep or entering any low power mode. At about the same time that I enabled the iGPU, I also started setting Don't Sleep to allow screen saver and displays going to sleep. The last 2 days I have set Don't Sleep to NOT allow screen saver or displays going to sleep and there was no reboot. So it might have something to do with how I configure Don't Sleep.

Can you clarify how you came to suspect the reboots are related to the iGPU driver? Was this based on review of the DMP files? Since I changed several things at once just before the reboots started, it is difficult to know which change (if any) caused the reboots. I am not able to analyze the DMP files so I tried to do what you advised. Since I have now used the Intel driver installation .exe file to remove and reinstall the iGPU driver, I will see what it does for the next few days. I will also try to figure out if changing the Don't Sleep setting for screen saver and display sleep affects the reboots..

Many thanks for your help, and you patience in reading my rambling posts.

Update - I am marking this thread as Solved since my computer has stopped rebooting in the middle of the night. I am not sure what the cause was or why the reboots stopped. I did uninstall and reinstall the Intel iGPU driver and have since updated the driver to v30.0.101.1994 which was released on May 14, 2022.

Based on review of Event Viewer, I thought the reboots may have been caused by a Bug Check event but MrPepka suggested it was the Intel UHD 630 graphics driver. I assume he determined this by reviewing the DMP files I provided.

Thank you MrPepka