My PC just shut down(sudden black) - and restart it self

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Nyprez

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May 26, 2015
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I just build my 4th computer and it has been running fine in 3-4 weeks until yesterday where it just completed shutdown(screen went black, keyboards went off and then on as PC restarted) and restarted. What could it be? I'm worried that it will repeat as I've seen some threads as "randomly restart" issues.

The issue occurred as I played Minecraft while being on skype, had some webpages in background etc. Notice I've been able doing this fine before within these week.

I haven't installed GPU yet, running on integrated graphic .

The CPU temperature is good as far as I can say. And if it would be RAM issue, then I would get blue screen or freeze right? So it might be PSU? What should I do?

My components:
PSU: Evga supernovo g2 850w(gold)
Mobo: Asus z170 pro gaming mobo
CPU: i7 6700k
RAM: GSkills 3200mhz, 16 gb
M.2/SSD: Samsung pro 950(windows installed) + samsung 850 evo

 
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JQB45

JQB45

Splendid
Jun 23, 2006
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Does this restarting only happen while playing Minecraft? Can you try another game? If its just in Minecraft I would make sure your JAVA is fully up to date and fully patched. Also make sure you have the most recent copy of Minecraft.

I'd be surprised if it was your PSU as its a high quality unit, if you have the random shut down in other games then I'd run MemTest on the memory and when the memory checked out I would RMA the power supply.
 
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Nyprez

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May 26, 2015
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I see. I agree it's unlikely to be PSU.
I've played several games and minecraft without any issue until yesterday so I cannot provide any more information. But I will try it further and pay attention. Could it be just one time event or is it likely to occur again?

Is it possible that JAVA could cause a sudden shutdown ?
 
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Nyprez

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May 26, 2015
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It happened again, this time just total shutdown during a game, every led is working, including mouse and keyboard, but the computer refuse to turn on. What could it be? This time I had installed GPU, worked fine three days.
 
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