Hi Sparax,
Yes, I have checked it. One of the first thing I do with recently installed Windows is to configure Power Management Plan: select High permormance plan and set values for Turn off display, Hibernate and so on to "Never". By the way the problem occurs when I playing games(mostly) and when I trying to watch movies. I think that system should not go into Hibernate mode when there is a lot of user activity (World of Warcraft / Heroes of the Storm / other games).
The problem is that I have build this PC recently and almost all components are new, so it took some time to understand what part is "bugged".
I tried to run OCCT and other CPU heaters - everything was fine, CPU temeperature never gets higher than 70C. After 1 hour I turned this test off and get the CPU off the list of possible bugged hardware.
After that I tried to check my video card: 1 hour Furmark, 80C temperature, everything was stable. So, I decided that video is fine.
After that I checked my memory with Windows memory diagnosting - it says that memory is fine also.
So there is nothing left but motherboard. And if it is not ACPI error - then I'm mixed-up for the moment and just do not know what to do with it.
I'll describe how it looks one more time:
Let's say that you play some game, Counter-Strike for example. So you are running to the base, or from the base, or whatever else, and at the next moment your monitor just going black, sound is turned off, but the system looks working: you may see that cooler is working, HDD, video card and so on - everything is looks and noise as working computer. But you hear no sound and there is no picture on your monitor.
You press "Reset" button and your computer shutdowns in 2-3 seconds (system is on SSD, so it is fast process). After that you press Power button on your case and, when OS is loaded, you going into Event Viewer and check that you have some new records there:
1 error message: "This PC was rebooted unexpectedly" (or something like this).
1 warning message: "This PC was rebooted unexpectedly" (the text is the same as in the message above).
and 1 information message: "The driver \Driver\WUDFRd failed to load for the device ACPI\PNP0A0A\2&daba3ff&2."
So, as PC isn't crushed actually - I can't even get a system crush dump file, because there is no such file: system was shutdown by user command from "reset" button and it is not a crush. But the screen is black and there is no sound. So.. I don't know what to do and what to think. I have checked all the other components exept motherboard and they were OK. So I decided that the problem is in motherboard. I would check it too, but I have no idea how to do it.
