Windows 8 and 8.1 Forums


Random Restarts (Startup, gaming, browsing)

  1. #11


    Posts : 148
    Windows 8.1 Update 1


    My guess is a defective PSU since it's the only part you have not replaced so far. It does not matter that it has enough power (750 W) if it is defective. Even if the PSU only fails for a milisec or so and is only short of a few mV this leads to immediate restart/ shutdown of the pc. Thus my advice is to get a new PSU.

      My System SpecsSystem Spec

  2. #12


    Posts : 8
    Windows 8.1 Pro x64


    Hi guys,

    Thanks for all the responses so far, but I have just encountered a new problem. I was just browsing the internet as usual and suddenly the computer restarted itself. But instead of going through POST the CPU LED on the motherboard instantly turns on and stays lit. I don't understand how the PC can be working for a whole week, suffer one restart and now the computer wont even boot. I turned it off from the switch (case buttons unresponsive) and removed 1 RAM stick. Computer turns on and instantly ( I mean as soon as the power button is pressed) the LED for CPU turns on. Repeated the process with the other RAM stick, same issue. When I boot it, there are two fans connected to the motherboard which do not turn on. My other case fans that are connected directly to the power supply do turn on.

    I have encountered this issue before when I had my previous motherboard. I just unplugged all connections and plugged them back in, after doing this several times the PC would work again. I think I'll try that now.

    Honestly I think it's my CPU that is playing up.
      My System SpecsSystem Spec

  3. #13


    Did you try what I suggested ? Auto settings are wrong many times.
    PSU, it does not have to malfunctioning or too low power all together, Which exact model is it. Check the sticker on it. Some have 2 or more branches with their own limits. One for mainboard and another for video cards etc. Total power of the PSU can look to be enough but one branch may not have enough power to handle everything, that is usually for second branch for GPUs etc. Also, total power of PSU is only peak power and is not supposed to run that high all the time.
      My System SpecsSystem Spec

  4. #14


    Posts : 8
    Windows 8.1 Pro x64


    Quote Originally Posted by CountMike View Post
    Did you try what I suggested ? Auto settings are wrong many times.
    PSU, it does not have to malfunctioning or too low power all together, Which exact model is it. Check the sticker on it. Some have 2 or more branches with their own limits. One for mainboard and another for video cards etc. Total power of the PSU can look to be enough but one branch may not have enough power to handle everything, that is usually for second branch for GPUs etc. Also, total power of PSU is only peak power and is not supposed to run that high all the time.
    No, I did not try that yet, but I will try it as soon as I can get my PC to boot again. At the moment it wont boot into BIOS no matter what. My PSU is a Corsair GS700.
      My System SpecsSystem Spec

  5. #15


    Seems like that PSU got pretty good rating: Corsair GS700 Bronze Power Supply Review | Hardware Secrets but you might have a defective one. Try resetting BIOS to default before you attempt another start.
      My System SpecsSystem Spec

  6. #16


    Posts : 8
    Windows 8.1 Pro x64


    Quote Originally Posted by CountMike View Post
    Seems like that PSU got pretty good rating: Corsair GS700 Bronze Power Supply Review | Hardware Secrets but you might have a defective one. Try resetting BIOS to default before you attempt another start.
    Okay I managed to get the PC to boot into the BIOS, but I'm not exactly sure what I'm looking for, or how to navigate in this BIOS. I am using an ASUS Saberooth 990fx. I would very much appreciate some help to navigate, thanks.
      My System SpecsSystem Spec

  7. #17
      My System SpecsSystem Spec

  8. #18


    Posts : 8
    Windows 8.1 Pro x64


    Quote Originally Posted by CountMike View Post
    Yep I've got a hard copy next to me.
      My System SpecsSystem Spec

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Random Restarts (Startup, gaming, browsing)
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