Computer switches itself off automatically

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Guest

Guest
ok guys the problem is that my computer turns its self off and i don't know the problem

the thing is it only happens when i go downstairs for a long period of time this started happening when windows 8.1 pro was installed and my new graphics card (i wouldn't say new but newly brought second hand) i know its not the graphics card because i previously had windows 8 installed and it worked ok

my specs

CPU- Athlon II X4 640
Motherboard- GA-M56S-S3
Graphics Card- Point of View GTX 260 216 Core EXO Extreme Overclock Edition
Ram- 5GB of Generic Ram
PSU- G7 580W

i have asked other places like yahoo answer and i'm not getting reply's so i thought i might try here due to this forum being for computer
 
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Guest

Guest


i know for sure its not temps the reason being is my CPU reachs 40 degrees max and My GPU reachs 75 Degrees max and this was when i was playing BF4 1920x1080 on medium settings