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Computer shutting power cut without restart

By MysterioMask ยท 9 replies
Oct 19, 2017
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  1. A friend of mine has been having an issue with her desktop computer for a while. What it does is it will randomly shut off (completely shuts the power off) in an instant and does not attempt to restart itself back up. Sometimes this will happen when booting the computer before she can type in her password to log into the computer. Sometimes it will run for hours and hours without issue then randomly shut off.

    I suggested the power supply. So I changed that the other day to a more powerful one. It ran good for about a day and a half and then tonight randomly shut off once more.

    My only other ideas is motherboard or cpu. I figure most other issues such as ram, or hard drive or whatever would freeze or shut down the computer but the computer at least would attempt to restart itself on its own. Its windows 10. I can provide more info if needed.

    Does anyone else have any ideas or suggestions?
  2. holdum323

    holdum323 Banned Posts: 1,725   +455

  3. MaikuTech

    MaikuTech TS Maniac Posts: 792   +140

    When her pc reboots quickly, does the post screen say anything about a oc error or bios configuration error occured and needs to be fixed ?
    You could try safemode for windows 10 but you would need to be very quick to set it up while logged into windows.
    https://www.digitalcitizen.life/4-ways-boot-safe-mode-windows-10 I suggest you do it for her if you are capable.

    Next reboot into safemode just like you would in windows 7, start off with looking at windows update.
    It might be that windows 10 downloaded something and now the system maybe unstable to work
    Until that driver or software maybe removed, look at the dates and try to remember when all of that started.

    If you can figure that out, get rid of the update or whatever doing all of this.
    A quick reboot and use the computer for 2 hours or so.
    Event viewer can shed more light on the problem if it may not be windows update.
  4. jobeard

    jobeard TS Ambassador Posts: 12,209   +1,361

    Reverify the control panel POWER settings - - disable all slowdowns or Poff's and just set a Sleep Timer.
  5. MysterioMask

    MysterioMask TS Booster Topic Starter Posts: 128

    Its not a power setting problem. It can randomly shut off before even logging in and sometimes will stay running for long periods.

    The computer was fairly recently reset with a new harddrive after the old one messed up. It was still acting up.

    No bios error messages that I have ever noticed.

    Someone had her use msi afterburner and kombuster 3 and ran the cpu hot. When she would use 1-7 core / thread option to over heat those it would get hot to maybe 80c once she did all cores within 20 seconds the computer would shut down but she never noticed it get above 70-80c before it shut down.
  6. holdum323

    holdum323 Banned Posts: 1,725   +455

    Hi. I gave you my best suggestion in my first reply to your issue . IMHO, there are two choices. Hardware or Software. You say the PC was reset and the hard drive was replaced. My next suggestion would be a clean install of W10, after you create a back up image of your OS. A reset is good, but a clean install is better. Also you did not mention if you tested other hardware.
    Let us know how things go!
  7. Jollyriffic

    Jollyriffic TS Member Posts: 57   +24

    Msi afterburner and kombuster are gpu tools, they cant do anything with the cpu to make it run hot unless you're running an APU.
    There's a very likely possibility that the computer is overheating though.
    one good area to look would be the event logs to see what if any errors have been thrown prior to the shutdown.
    I would also monitor the heat of the cpu to see if maybe your system is hitting the thermal threshold. You don't get a normal "computer is shutting down" when you hit tj max.
    If it is a temp problem snag some thermal paste, if you need to order some I recommend https://www.amazon.com/dp/B002P5W4RU/?tag=httpwwwtechsp-20 of the non-conductive paste, it's one of the top best tested and what I use in all my systems. used to use liquid ultra but that stuff is a pain to clean up, you actually have to sand it off of your block to remove from copper.
    also double check and make sure that all the fans in the system are actually spinning while its on. could be something simple like the cpu fan has stopped working.
    holdum323 likes this.
  8. MaikuTech

    MaikuTech TS Maniac Posts: 792   +140

    Ok that explains the main problem, have her check the computer in bios and look at the cpu tempature.
    What is the current tempature being displayed, what is her current cpu speed also ?
    Try to have her remember when was the last time thermal grease was applied ?
    If it was less than a year ago or six months, go by newegg or good computer shop.

    Start off with that, also remove the old remains of her thermal paste.
    Power off the machine, unplug it, lift the mobo lever for the cpu gently, pull the cpu with 2 fingers.
    Get this here:
    Lint free paper towels, remove the grease, use warm tap water to remove any smeers after words.
    -Quick note to any loud mouths or trollers-
    *I've done this numerous times in all my years of with no problems*
    A Few drops will do put it in a little box and let it dry for 7 minutes.
    Grab a pepsi or whatever and take a break.
    Next come back to it, put the cpu back in, drop down 4 drops of the grease on each side of the cpu.
    Clean off the heatsink the same way as mentioned, put it back on and it should boot up.
    I recommend you go by her house and do it so you will know its done right.
    Last edited: Oct 20, 2017
  9. MysterioMask

    MysterioMask TS Booster Topic Starter Posts: 128

    When the harddrive was replaced it was a clean install of windows 10
  10. holdum323

    holdum323 Banned Posts: 1,725   +455

    Hi Thanks for your reply. I suggest you test your hardware. The below quote is taken from the link I provided previously. A clean install should have eliminated the software.
    If your computer turns off abnormally during (or just after) installation of your operating system, it is likely that other hardware is failing in the computer. Often, the hardware causing the issue will be either the RAM, CPU, mother board, power supply, or video card, in that order.
    Last edited: Oct 22, 2017

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