PC shuts down and turns back on by itself while playing graphics intensive games

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Brakheart

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Oct 29, 2015
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I have the exact same problem as another person noted in a post named just like this one, GPU tops at around 74-75 while playing very graphic intensive games like AC Origins or Guild Wars 2. And before you suggest anything, I had this exact same problem a while back with my old PSU, and bought another new one thinking that changing it would remove the problem. It didn't. It just happened the same thing right now with the new one, and this one is not even one year old. Since I have 12GB of RAM and therefore not all ram slots are occupied, I thought that maybe removing one of the ram cards and see if maybe that was it, but it wasn't. The same thing happened after I played Guild Wars 2 for a while. Any help?
My specs:
CPU: i5 2500k @ 4.2ghz
GPU: gtx 970 4gb DDR5
RAM: Corsair Vengeance 12GB DDR3
Windows on SSD
All games installed in a separate Seagate 465gb ST500DM002 SSD
 
Solution
cherry blossoms
As a check, please post the name/maker and model of your PSU. This information may be relevant as some PSUs def DON"T supply the power advertised and may not be providing sufficient amperage on the +12V rail (I have seen a "500 W power supply listed with 12 amps listed on the +12V...ridiculously low) Cheap power supplies may also degrade over time and in overvoltage situations (since you are overclocking)

As you are overclocking you may want to bump your clock and voltage down a little, even if your overclock was previously stable.. Dedusting your system and adding a fan specifically for VRM cooling may be beneficial. How is your case airflow? Cables bundled and out of the way to help airflow?

Checking your CPU cooling and...
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cherry blossoms

cherry blossoms

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Apr 13, 2016
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As a check, please post the name/maker and model of your PSU. This information may be relevant as some PSUs def DON"T supply the power advertised and may not be providing sufficient amperage on the +12V rail (I have seen a "500 W power supply listed with 12 amps listed on the +12V...ridiculously low) Cheap power supplies may also degrade over time and in overvoltage situations (since you are overclocking)

As you are overclocking you may want to bump your clock and voltage down a little, even if your overclock was previously stable.. Dedusting your system and adding a fan specifically for VRM cooling may be beneficial. How is your case airflow? Cables bundled and out of the way to help airflow?

Checking your CPU cooling and redoing the thermal paste may be helpful if it is 7 years old.

Curious as to the 12GB memory since I am not aware of any motherboard for the 2500K that is triple channel (that wasn't an LGA 1155 socket feature) and you say not all memory slots are occupied. Are you running your memory in a mix of double and single channel? Which did you remove and did that put you in simple dual channel operation? Mixing features can affect stability. Memory at 1.65 V if that is the XMP profile may also cause issues with the CPU voltage regulation.

Some SSD's don't play nice with 3rd party controllers onboard. You didn't states your MB and sata connections, but worth considering. Are the drives set NOT to sleep?
 
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