PC Randomly Restarting

So, a while back my pc had been randomly restarting. One day it never would turn back on. I had to RMA my motherboard and pwr supply just for the sake of knowing. I got them back recently and it kept happening! This time more frequent. It is like 2-20 minutes. It has never really lasted longer than that without rebooting. It does this infrequently. I did a reformat of my c drive and reinstalled windows 7. Updated bios, virus scan, and all drivers. No avail, still happens. No memtest yet, but how is this still happening?

Much appreciated.

ma78gm mobo
600ocz pwr supply
4gig ddr2 800 2 stick
win 7
rzr barracuda
raptr 150
wd 160
2x wd 250
9 answers Last reply
More about randomly restarting
  1. What are you PC temperatures?

    What model HDD are they? are they in RAID?

    Which of the five drives i the system drive?
  2. Sounds like something overheats. I had similar problem about year ago: PC just randomly booted its self like after 20-30 minutes.

  3. PC Temps hover around 36c. The hard drives are in a ide setup mode for now. I thought overheating was the problem, but I had a fan set up with the case open to see and it still has random resets.

    One problem I think is the network card. Realtek onboard lan may be causing instability problems. The pc restarts mostly when I use the internet. before the drivers were installed I couldn't plug in the ethernet without the pc restarting. Plugging in usb devices sometimes triggers a restart to. This motherboard has been doing this since I had my old one before the RMA. Must be driver related? No memory dumps though and the restart on system failure is unchecked. wat do?

    I could watch tv shows for a long time and I don't think it ever reset while doing so. I did a memtest for 7 hours and it seemed fine. Never completed it though.

  4. I have a raptor partitioned into c: and d:. drive. Win7 is on the c: drive.
  5. Performance data here.

    - System

    - Provider

    [ Name] Microsoft-Windows-Diagnostics-Performance
    [ Guid] {CFC18EC0-96B1-4EBA-961B-622CAEE05B0A}

    EventID 100

    Version 2

    Level 2

    Task 4002

    Opcode 34

    Keywords 0x8000000000010000

    - TimeCreated

    [ SystemTime] 2010-11-14T18:43:40.274120600Z

    EventRecordID 121

    - Correlation

    [ ActivityID] {851AE364-19E3-0001-A6BF-6F952B84CB01}

    - Execution

    [ ProcessID] 1420
    [ ThreadID] 1432

    Channel Microsoft-Windows-Diagnostics-Performance/Operational

    Computer Nashery

    - Security

    [ UserID] S-1-5-19

    - EventData

    BootTsVersion 2
    BootStartTime 2010-11-14T18:41:43.578000200Z
    BootEndTime 2010-11-14T18:43:38.560022600Z
    SystemBootInstance 69
    UserBootInstance 68
    BootTime 68608
    MainPathBootTime 26908
    BootKernelInitTime 17
    BootDriverInitTime 462
    BootDevicesInitTime 3203
    BootPrefetchInitTime 54179
    BootPrefetchBytes 447938560
    BootAutoChkTime 0
    BootSmssInitTime 6501
    BootCriticalServicesInitTime 452
    BootUserProfileProcessingTime 2307
    BootMachineProfileProcessingTime 167
    BootExplorerInitTime 7847
    BootNumStartupApps 17
    BootPostBootTime 41700
    BootIsRebootAfterInstall false
    BootRootCauseStepImprovementBits 0
    BootRootCauseGradualImprovementBits 0
    BootRootCauseStepDegradationBits 0
    BootRootCauseGradualDegradationBits 0
    BootIsDegradation false
    BootIsStepDegradation false
    BootIsGradualDegradation false
    BootImprovementDelta 0
    BootDegradationDelta 0
    BootIsRootCauseIdentified false
    OSLoaderDuration 1936
    BootPNPInitStartTimeMS 17
    BootPNPInitDuration 3225
    OtherKernelInitDuration 1630
    SystemPNPInitStartTimeMS 4724
    SystemPNPInitDuration 441
    SessionInitStartTimeMS 5296
    Session0InitDuration 1447
    Session1InitDuration 188
    SessionInitOtherDuration 4865
    WinLogonStartTimeMS 11798
    OtherLogonInitActivityDuration 4788
    UserLogonWaitDuration 602
  6. anyone?
  7. Have you tried one stick of memory at a time? I have seen memory pass a mem test and still be faulty and I have also seen the smallest piece of dust on a mem chip making the machine not want to boot.

    Also look at this article there is an advanced BIOS interface they mention: http://www.legitreviews.com/article/676/4/
    "'ctrl+f1' to unlock the advanced features of the BIOS."
  8. Make sure you have the correct Mem voltage in the bios for your particular memory. 1.8-1.9 I would try 1.8 and see if that works if not, go to 1.9.
  9. I have tried using 1 stick of memory in each of my four slots. It also has been cleaned. well. I had once heard about my mobo not being grounded well. but I have taken it out a bunch before and reset the mobo. Sometimes when this happened (before RMA), it would not turn back on. Often I had to take everything apart and put it back together before it worked again.

    I'll try the bios features. Thanks!
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