With variable frequency I experience PC lockups and unexpected resets. Event viewer calls it "Kernel-Power Event ID 41, Task 63". I have taken steps to eliminate various driver issues and possible failing hardware as the cause. The power supply is brand new and provides a generous 750w. The video card is aging, but has been tested in another PC. The video drivers have been wiped clean and reinstalled from scratch. There is sufficient cooling to the CPU and motherboard components. I have also tried other fixes such as disabling all audio drivers not currently in use, as well as disabling Fast Boot.
The most common condition leading to these crashes is if I happen to have a Chrome window open, playing a podcast whilst simultaneously playing a graphics-intensive game in a window. I can do one or the other for a long period of time, but not both. Some times, but not every time, the crash is preceded by a TDR error (The one that says "Display Driver nvlddmkm has stopped working and has successfully recovered"). Once also a freeze occurred while navigating the BIOS menu, but I would not suspect the motherboard as it is brand new (less than two weeks). I have not overclocked the system. It is in fact set to the Eco/Power-saving mode from BIOS in response to the first series of crashes while the BIOS was set to the normal power mode.
I suspect faulty RAM modules to be the core issue.
The complete event viewer Kernel-Power event text is as follows.
Log Name: System
Source: Microsoft-Windows-Kernel-Power
Date: 7/10/2016 5:02:49 PM
Event ID: 41
Task Category: (63)
Level: Critical
Keywords: (70368744177664),(2)
User: SYSTEM
Computer: dasBoogieBox
Description:
The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Kernel-Power" Guid="{331C3B3A-2005-44C2-AC5E-77220C37D6B4}" />
<EventID>41</EventID>
<Version>3</Version>
<Level>1</Level>
<Task>63</Task>
<Opcode>0</Opcode>
<Keywords>0x8000400000000002</Keywords>
<TimeCreated SystemTime="2016-07-10T21:02:49.098149700Z" />
<EventRecordID>3873</EventRecordID>
<Correlation />
<Execution ProcessID="4" ThreadID="8" />
<Channel>System</Channel>
<Computer>dasBoogieBox</Computer>
<Security UserID="S-1-5-18" />
</System>
<EventData>
<Data Name="BugcheckCode">0</Data>
<Data Name="BugcheckParameter1">0x0</Data>
<Data Name="BugcheckParameter2">0x0</Data>
<Data Name="BugcheckParameter3">0x0</Data>
<Data Name="BugcheckParameter4">0x0</Data>
<Data Name="SleepInProgress">0</Data>
<Data Name="PowerButtonTimestamp">131126581207117100</Data>
<Data Name="BootAppStatus">0</Data>
</EventData>
</Event>