New PC rebooting/freezing under stress

  1. Hey guys I recently (within the last 2 weeks) built a new computer and it has been rebooting and freezing on me whenever I try to use youtube or play games on steam.There have been no BSOD, the computer just freezes requiring a hard reset, or it will reboot itself. I have already run several stress tests including: Heavyload, Furmark, prime95, and metest86*. The computer did not crash during any of these tests. In addition I have been monitoring hardware temperatures using SpeedFan, so I do not suspect the rebooting/freezing is due to overheating. I have used a different power supply to see if that was the problem although it did not change anything. I have also completely updated my graphics drivers.

    *I ran memtest on my computer and could not reach 7-8 passes. I could only complete 1 pass in 20 hours, which was horrifically slow, It was 'stuck' on test 13 (hammer test) for most of that time. I did not feel like running my computer 140+ hours to complete a stress test.

    OS: Windows 8.1 64bit
    Geforce GTX 970 graphics card
    AMD FX-4350 quad core processor
    Gigabyte 970A-UD3P motherboard
    8GB of PNY ddr3 ram (1x 8GB stick)
    Corsair CXM series 500W ATX 12V power supply
    Western Digital Blue 1TB Hard Drive

    -Was having problems with an old thread so I made this one.
  2. jobeard

    jobeard TS Ambassador Posts: 9,143   +597

    Investigate Event View; system logs. Look for errors
  3. Andrew McPhee

    Andrew McPhee TS Rookie Topic Starter

    Checked found multiple of the same error: event 41, Kernel-Power: The system has rebooted without cleanly shutting down first. This error could be cause if the system stopped responding, crashed, or lost power unexpectedly.
  4. jobeard

    jobeard TS Ambassador Posts: 9,143   +597

    Those are POST(after) failure and logged upon restarting.
    You want the log entry that immediately follows this one.
  5. Here was the error I found immediately before the most recent crash:
    Event 6008, Eventlog The previous system shutdown at 2:42:30 PM on ‎7/‎6/‎2015 was unexpected.
    XML view:
    - <Event xmlns="">
    - <System>
    <Provider Name="EventLog" />
    <EventID Qualifiers="32768">6008</EventID>
    <TimeCreated SystemTime="2015-07-06T19:17:08.000000000Z" />
    <Security />
    - <EventData>
    <Data>2:42:30 PM</Data>
    <Data />
    <Data />
    <Data />
    <Data />
  6. jobeard

    jobeard TS Ambassador Posts: 9,143   +597

  7. Andrew McPhee

    Andrew McPhee TS Rookie Topic Starter

    I just ran my A/V offline and it detected no issues (I'm running eset nod32 antivirus)

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