Windows 8 and 8.1 Forums


shuts off then wont turn on for a while

  1. #1


    Posts : 3
    Windows 8 Pro

    shuts off then wont turn on for a while


    As title says, computer randomly shut off without warning and won't turn back on. However if I wait for a while or reset the bios by removing the battery it will then decide to start again. It seems to occur when I am putting decent load on the system, and will always happen after about ten minutes of running prime95.

    My initial thoughts are overheating however monitoring with core temp the CPU never goes above 65 degrees. Another weird thing is after the shutdown the bios will reset by itself if I wait. I tested the PSU with a multimeter and the voltages are fine. I'm thinking PSU, CPU or mobo. What are your thoughts?

      My System SpecsSystem Spec

  2. #2


    Posts : 3
    Windows 8 Pro


    Another strange thing I've noticed. If I plug the CPU fan into the CPU fan connector on the motherboard the system overheats when under load. As the CPU heats up the fan seems to slow down. Starting at about 1100rpm and slowing to about 600rpm as the CPU overheats. I shut it off at 80 to prevent damage. I tried all the different fan settings - pwm, voltage and running at max all with the same result.

    If i plug the fan directly into the PSU it doesn't overheat, but system still shuts off.

    Im not sure what to do! Don't want to start replacing parts if I don't know what the problem is.
      My System SpecsSystem Spec

  3. #3


    Posts : 3
    Windows 8 Pro


    Thanks for nothing
      My System SpecsSystem Spec

shuts off then wont turn on for a while
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