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Author Topic: random reboots (even in POST or in BIOS)  (Read 3068 times)

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lammatt

    Topic Starter


    Newbie

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    • OS: Windows 7
    random reboots (even in POST or in BIOS)
    « on: November 18, 2013, 09:08:55 PM »

    my computer has run into randomly rebooting itself for a month or so,
    sometimes it works for an hour or two, sometimes it cant even load into the OS, and worst times it cant even go pass the POST screen
    at first i thought i might be a PSU issue, so i got myself a new cooler master 525W (which is more than enough for my system, i am sure)
    but then the issue persists with the new PSU
    then i memtest my system and it reported no error anyways, (but still i swap my ram sticks with another computer i have anyways)
    and the problem still stays
    now i am fairly frustrated,
    what can be the issue stem from?
    is it the display card or the mother board or the CPU?
    how can i make sure which causes the problem (see...these three things are the most expensive parts and changing them may as well build a new computer)
    ---
    i noted the overheat LED on my display sometimes blink or light continously when the computer fails to boot or when it boot loops. but the card isnt even remotely hot
    ---
    my spec
    gigabyte 790xt-ud4p
    2x2G DDR3 1333
    hd4850 512mb
    phenom2 X4 955
    WD black 600G x2 in RAID 0
    ---
    my ram timings are all auto and voltage is normal
    my cpu is at stock 3.2, auto clocking is off, voltage is at stock, CPU fan is always max
    my display card clocking setting is stock and fan is always maximun ( i dont think i can tweak it other than in the AMDoverdrive thing in windows anyways, so i assume it runs at stock before loading into windows.)

    PCdoc



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    Re: random reboots (even in POST or in BIOS)
    « Reply #1 on: November 18, 2013, 09:30:35 PM »
    Note the temperatures of cpu in bios to check if its over heating.
    ....

    lammatt

      Topic Starter


      Newbie

      • Experience: Beginner
      • OS: Windows 7
      Re: random reboots (even in POST or in BIOS)
      « Reply #2 on: November 18, 2013, 09:41:53 PM »
      nothing is remotely hot.

      why would you think it's overheating issue anyways when it doesnt even go pass the POST screen (with stock clockings and voltage)

      PCdoc



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      Re: random reboots (even in POST or in BIOS)
      « Reply #3 on: November 19, 2013, 12:14:18 AM »
      Why would you 'think' a CPU does not over-heat when it powers on (before POST)? ?
      ....

      Computer_Commando



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      Re: random reboots (even in POST or in BIOS)
      « Reply #4 on: November 19, 2013, 10:08:36 AM »
      nothing is remotely hot.

      why would you think it's overheating issue anyways when it doesnt even go pass the POST screen (with stock clockings and voltage)
      You're the one that said overheat.
      ...
      ---
      i noted the overheat LED on my display sometimes blink or light continously when the computer fails to boot or when it boot loops. but the card isnt even remotely hot
      ---
      What is an "overheat LED"?