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  • PC turns off, on and off

    Hi everyone, I just recently finished building my pc, and I'm having trouble getting it to work properly. When I press the power switch it stays on for 15 seconds, then turns off, 5 seconds later it turns on by itself, does this same thing repeatedly, until I press the switch on the PSU.


    I just tested my PSU with a case fan, the fan stays on, so this means that my PSU is functional. I have removed the video cards and sdd from the motherboard, and it still does the same thing.


    When I turn on the PSU, I see a yellow light from the motherboard. After I press the power switch, I see a red light on motherboard too. I also see the number 15 led on the motherboard. Is the motherboard causing this or something else? I would greatly appreciate some help with this problem.

    Specs:
    CPU: i5-4670k
    Motherboard: Gigabyte GA-Z87X-UD4H
    Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory
    PSU: HX 750
    CPU Cooler: Noctua NH-D14 65.0 CFM
    GPU: 760s SLI

  • #2
    Re: PC turns off, on and off

    try a bare minimum setup

    no (hdd/dvd drives,gpu's attached) and use only one ram stick in second slot from cpu socket,i don't know what onboard display ports you have on that board or your monitor but try with hdmi/dvi/vga if you have them

    if it still loops then try with a different psu

    look in the mb manual to see what error code 15 is

    ohh and you can try a cmos clear by leaving out the motherboard battery a good 30 minutes then put back in and try booting
    Last edited by wazza300; 08-27-2013, 10:02 AM.
    Gigabyte z77x UP4-TH F11c Modded Bios
    Intel i7 3770k 24/[email protected] 1.38v Turbo llc +0.165v dvid multithreading enabled
    Samsung Green(MV-3V4G3D/US) 8GB @2133mhz 9-10-10-21-1t 1.55v
    Thermalright Silver Arrow Cpu Cooler
    1xSamsung 840 pro 256 Gb SSD windows 8.1 pro 64bit
    1xSamsung f4 HD204UI 2tb hard drive Storage
    Powercolor 7970 3gb V3 @1150mhz core/1700mhz mem,1.150v Accelero aftermarket air cooler 55c max
    Razer Lycosa Keyboard
    Logitech X-530 5.1 Speakers
    Lite-On iHAS124-19 24x Sata DVDRW
    K-World Hybrid DVB-T 210SE Digital T.V Card
    L.G E2260V L.E.D 1920x1080 Monitor
    Xfx Pro 750w silver rated Psu 80+
    Fractal Arc Midi Case

    http://i38.tinypic.com/14myvfa.jpg x58 ud5 <=3.8ghz + 4.2ghz Overclock Template!!
    http://www.youtube.com/user/warren304#p/u Visit Me On Youtube

    Lots Of Gaming Videos With X58 Ud5 System And Gpu On My Youtube Channel!!
    Just Uploaded New Battlefield 4 Video!!!!!!!!!!!!!!!!!!!!!!

    Comment


    • #3
      Re: PC turns off, on and off

      Thank you! Its working on the bare minimum, and I actually see the boot menu on screen. Maybe i had the memory in the wrong slots?
      15 error is "Pre-memory North-Bridge initialization is started."

      Comment


      • #4
        Re: PC turns off, on and off

        I think my memory might not have been all the way in. Would that cause this problem?

        Comment


        • #5
          Re: PC turns off, on and off

          I got it running with the video cards, but no DVI signal this time.

          Monitor is VG248.
          Last edited by svt20; 08-27-2013, 11:16 AM.

          Comment


          • #6
            Re: PC turns off, on and off

            Looks like its working fine, thank you for the help!

            Comment


            • #7
              Re: PC turns off, on and off

              ahhh that's good,sorry for the late reply was asleep
              Gigabyte z77x UP4-TH F11c Modded Bios
              Intel i7 3770k 24/[email protected] 1.38v Turbo llc +0.165v dvid multithreading enabled
              Samsung Green(MV-3V4G3D/US) 8GB @2133mhz 9-10-10-21-1t 1.55v
              Thermalright Silver Arrow Cpu Cooler
              1xSamsung 840 pro 256 Gb SSD windows 8.1 pro 64bit
              1xSamsung f4 HD204UI 2tb hard drive Storage
              Powercolor 7970 3gb V3 @1150mhz core/1700mhz mem,1.150v Accelero aftermarket air cooler 55c max
              Razer Lycosa Keyboard
              Logitech X-530 5.1 Speakers
              Lite-On iHAS124-19 24x Sata DVDRW
              K-World Hybrid DVB-T 210SE Digital T.V Card
              L.G E2260V L.E.D 1920x1080 Monitor
              Xfx Pro 750w silver rated Psu 80+
              Fractal Arc Midi Case

              http://i38.tinypic.com/14myvfa.jpg x58 ud5 <=3.8ghz + 4.2ghz Overclock Template!!
              http://www.youtube.com/user/warren304#p/u Visit Me On Youtube

              Lots Of Gaming Videos With X58 Ud5 System And Gpu On My Youtube Channel!!
              Just Uploaded New Battlefield 4 Video!!!!!!!!!!!!!!!!!!!!!!

              Comment

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