Random Kernel Power, Event ID 41 Task 63, No B.S.O.D. Solved

  1.    03 Dec 2015 #1

    Random Kernel Power, Event ID 41 Task 63, No B.S.O.D.


    Recently I've been experiencing random shutdowns of my entire system exclusively while gaming. I would normally expect a B.S.O.D. from an unstable system, but, unfortunately, no screen appears. The only thing that happens is that the system restarts itself suddenly after two to three hours of gaming.

    The strange thing is that the shutdowns only happen during gaming, but they never happen during stress tests or video conversions. It's just when I'm gaming. I was also unable to find any minidump files in the root Windows folder. The only symptom I get is a generic error log in the Event Viewer.

    I have already tried some troubleshooting to narrow down the issue.

    I verified that I have "Automatically Restart" turned off in System Properties > Startup and Recovery. I have Complete Memory Dump turned on in the same section, and I set the Page File to the level recommended by the Memory Dump setting.

    Here's everything I've tried so far to troubleshoot:

    1) Stress tested the entire system using OCCT. I ran the test for almost 2 hours, and I checked in periodically to ensure none of my components were overheating. The voltages from my power supply also looked correct on the 12V, 3V, and 5V rails (I saw a max of .03V deviation). I was able to game for about two hours until my system rebooted again. I can let the system sit and run video conversions in VidCoder X for about 10 or 12 hours without a crash.
    2) Ran a full Windows Memory Diagnostic. I did the extended test with two passes. No errors.
    3) Physically swapped RAM sticks and checked all connections to PSU, GPU, etc. Verified that PSU fan turns on. No dust inside PSU or GPU heat sink.
    4) The system uses about 480W during a stress test of both the CPU and GPU. The most I see when gaming is somewhere around 400W.
    5) CPU temp never exceeds 60C when gaming, but it maxed out at 75-80C on the stress test. The GPU maxes at about 79 or 80C, but I've had it running at that temperature before without an issue.
    6) I did a complete reinstall of my Nvidia graphics drivers. I noticed that after uninstalling them, Windows reinstalled the originals without my consent. I had to disable the automatic driver download, kill all Nvidia processes, uninstall all Nvidia items in Programs, and uninstall the graphics card from Device Manager.
    7) I reinstalled my graphics driver, but I left out the 3D Vision and the NVidia HD Audio drivers to see if it would make a difference. The reboot continues.
    8) I updated to the latest BIOS and adjusted some settings. I disabled anti-surge support and the VFR for the Intel chip. Neither setting made a difference in the old BIOS or the newer BIOS versions. I disabled Fast Boot in the BIOS, and I also disabled Fast Startup in CP > HW&Sound > Power Options > System Settings.
    9) These crashes didn't start until upgrading to Windows 10 from Windows 8.1. I was using Windows 10 for about a month or two before the crashes started. My system used Windows 8.1 for about 8 months without this type of crash happening.
    10) I have an overclock on the chip to 4.6GHz, but when my system has crashed due to instability in the past (when testing the overclock), there was always a BSOD with a different error message than 41. Generally, it was a watchdog error or temperature. I'm using a closed water loop with push/pull fans.
    11) I made sure that the outlet isn't resetting. I have a backup UPS attached to the computer, and I verified that the battery kicks in when I unplug from the outlet. The computer keeps running if I disconnect electrical power.
    12) It's probably not the UPS resetting because it makes a series of beeps when it turns off and on. I only hear the beep from the motherboard speaker when my computer restarts.

    If anyone has any suggestions on what else I can do to solve this, or if you know where I can go to get more information, I would really appreciate the help. I'm out of ideas on what else I can try to diagnose the problem because the error is really generic. At this point, I'm unsure whether it's my PSU, my GPU, Windows 10, or drivers. Any advice would be appreciated. Thank you for the help.

    i7-4790K OC to 4.6GHz
    Asus Maximus VII Formula
    Corsair H110 (Push/Pull)
    Corsair HX850W PSU
    Corsair Dominator 8GB 2133MHz
    EVGA GTX 780 SC
    Creative SoundBlaster X-Fi Titanium
    Crucial M4 SSD 512GB
    Seagate 1TB SSHD
    Western Digital Caviar Black 1TB HDD
    ROG Front Base
    Samsung Blu Ray Disc Drive
    Acer XB270H GSync Monitor
    Windows 10
    CyberPower 1500VA (900W) AVR UPS
    Random Kernel Power, Event ID 41 Task 63, No B.S.O.D. Attached Files
      My ComputerSystem Spec

  2.    04 Dec 2015 #2


    Anyone have any ideas? Last night I left my rig encoding video for about 8 hours while I slept, and it didn't restart. The issue is exclusively when gaming.
      My ComputerSystem Spec

  3. Dude's Avatar
    Posts : 12,728
    Windows 10 Pro X64
       04 Dec 2015 #3

    Welcome to the forums, is this during one specific game, or several games that do this? My first suggestion is to bump the vcore up some, or bring the cpu oc down a bit.
      My ComputerSystem Spec

  4.    05 Dec 2015 #4

    Dude said: View Post
    Welcome to the forums, is this during one specific game, or several games that do this? My first suggestion is to bump the vcore up some, or bring the cpu oc down a bit.
    Thanks for pointing that out. It happens in every game that I play, regardless of the CPU or GPU usage during the game. I have been playing with these OC settings just fine on Windows 8.1 for about 10 months. It was about a month ago when this started after I upgraded to Windows 10, and I may have downloaded an NVidia driver update. Do you still think it's the CPU OC settings? Generally, when I've crashed while playing games before (when I was trying to find a stable OC), I always got some kind of BSOD about watchdog or voltage. My temps have never gone above 60 when gaming. The crazy thing is that my OC is stable in all of the stress tests that I throw at it.

    I'll try disabling the OC on my CPU tonight while gaming to see if the issue persists.
      My ComputerSystem Spec

  5.    05 Dec 2015 #5

    Dude said: View Post
    Welcome to the forums, is this during one specific game, or several games that do this? My first suggestion is to bump the vcore up some, or bring the cpu oc down a bit.
    I tried three different forums, and no one thought to suggest this. Bumping up the VCore solved it.

    I tried disabling my OC completely in the BIOS by setting the core ratio to auto and voltage to auto. The BIOS set the voltage at 1.07V, but AI Suite showed 1.15V after opening Windows. I launched one of my games, and the system restarted without warning in less than a minute after getting into the game. I reloaded my stable OC of 4.6GHz and bumped up the VCore from 1.29V to 1.325V, and I was able to play for about 4 hours without a crash happening. Normally, the system would have restarted within about 1 to 2 hours. I'm guessing this is just due to wear on the CPU after a year? Thanks for solving my issue.
      My ComputerSystem Spec

  6. Dude's Avatar
    Posts : 12,728
    Windows 10 Pro X64
       05 Dec 2015 #6

    Glad to hear the vcore bump worked. Game on!
      My ComputerSystem Spec


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