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Computer turns off randomly while idle.

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  • Power Supplies
  • Computers
  • Systems
Last response: in Systems
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March 27, 2014 5:35:22 PM

Hey guys,

My computer has started to turn off randomly while idle.
I checked the PSU on its own (without load) and it ran fine for hours. I replaced the RAM with sticks i know to work and that didnt solve the problem. The Mobo doesnt have any signs of damage (no broken capicitors etc). I have also left the computer on the bios and it has still turned off which would indicate it isnt a windows problem. The GPU has also worked fine in a different computer.

The weird thing is that if i turn my computer on then play a game like League of Legends of Call of Duty than my system runs fine forever and will not turn off randomly at all afterwards, until i shut down my computer and turn it back on.

I have a feeling it might be the PSU as i dont know what else would cause the computer to turn off as if the power had just gone out. But why would my computer work fine after i play games?
Thanks,

System
Mobo: AsRock H61M/U3s3
Processor: Intel i5-2400
GPU: powercolor hd 7870
PSU: Coolermaster GX 650w
HDD: 1tb seagate barracuda
RAM: 8gb (2x 4gb DDR3-1066)
OS: Windows 7 Ultimate 64bit

More about : computer turns randomly idle

a c 166 ) Power supply
March 28, 2014 3:29:27 PM

Sure sounds like a failing PSU to me... in spite of the non-problem while gaming.
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October 16, 2014 10:11:56 PM

I have the exact same problem and think its the PSU as well. After dealing and looking up on this issue for 3 1/2 weeks I finally think it would have to be a faulty PSU. Just ordered another one and going to check. My pc is fairly new as of late April and didn't have these issues for the first couple months.
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