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PC Randomly rebooting, no BSOD

Last response: in Systems
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December 20, 2013 5:31:15 AM

Hello everyone, I've been having some problems with my pc lately, in the form of random reboots without any kind of warning.

It started almost a month ago and most of the times it happened while gaming, although I've had it happen a couple of times while browsing and once while idling; I had a week without any problem, then it started again without me having changed anything in the system.

I've successfully run prime95, furmark and memtest86, CPU temperatures were always below 55°C, graphics card's around 65-70, I even set a new record of total power draw (compared to gaming) without crashing.
Event viewer only shows a generic kernel power ID 41 error, I deactivated "automatic rebooting" to try and get a bsod with some info but it still reboots despite that.
A BIOS reset did nothing.

This morning I got 2 reboots while playing, one while browsing the internet 3 minutes after the last time it had happened, and one while sitting on the BIOS, which excludes every possible OS-related issue (doesn't it?).

Now, I have a strong suspicion that my PSU might be the culprit but I don't have a second one to spare and I'd like to avoid getting a new one only to discover the problem is still there.
Is there anything I can do to narrow it down even further? Are there tests that a technician could do to determine if it's actually failing?

Hope I haven't forgotten anything, many thanks to whoever answers :D 

My system specs:
Spoiler


  • P8Z68-V pro
  • i7 2600k (never overclocked) with corsair H60 heatsink
  • 4x2gb DDR3 vengeance 1600
  • Gtx 770
  • Samsung 840pro, wd caviar blue, seagate barracuda
  • Nexus rx6300 psu
  • Windows7 sp1

    a b ) Power supply
    December 20, 2013 5:43:50 AM

    its probably the psu
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    a b ) Power supply
    December 20, 2013 5:46:49 AM

    I agree. You should firstly rule out a power supply issue. Try RMA-ing it, if under warranty.
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    December 20, 2013 6:13:28 AM

    alexoiu said:
    I agree. You should firstly rule out a power supply issue. Try RMA-ing it, if under warranty.


    It's not under warranty anymore (almost 4 years old) so that's not an option. Unfortunately I'm not properly equipped (nor even remotely experienced enough) to test the psu myself, so I was thinking of contacting someone to do that for me.

    The thing is, this problem has been random from the start, some days I wouldn't notice anything, some other days it would reboot several times, and I've had a whole week with no problems at all, so is it possible for a professional to detect this kind of fault without having to wait for whatever it is that triggers it?
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    !