PC Runs for half a second then shuts down


  1. KaktusJaque
    Posts : 10
    Windows 10 Pro
       New #1

    PC Runs for half a second then shuts down


    Hello, I have a newer PC. I just installed a new MoBo today. I was done and ready to load the OS (Windows 10 Pro)
    I turned on the PC and the fans ran for about half a second then shut down. I checked all my connections and they were good. Including the header for the switches and LED lights. I then disconnected one thing at a time i.e. fans, and other misc power connections, and did the start procedure again each time. Same thing happened every time. I then thought maybe something was not connected correctly, so I took the entire PC apart MoBo and all and checked the CPU and memory, they all were good as well. Put it all back together and the same thing happened.

    No Beep codes.

    Do you have any clues for me to try to get this working?

    Motherboard: Gigabyte B250-HD3
    CPU: Intel Core i7-9700 Coffee Lake 8-Core 3.0 GHz
    CPU Fan: Noctua NH-L9i 92mm SSO2 CPU Cooler
    Memory: CORSAIR Dominator Platinum 16GB (2 x 8GB) 288-Pin DDR4 SDRAM DDR4 3333 (PC4 26600)
    PSU: EVGA SuperNOVA 1000 Gold

    CPU and Memory are a year old, purchased new.
      My Computer
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  3. Ghot
    Posts : 23,288
    Win 10 Home ♦♦♦19045.4355 (x64) [22H2]
       New #2

    @KaktusJaque

    It looks like that motherboard is not compatible with that CPU.

    GA-B250-HD3 (rev. 1.0) Support | Motherboard - GIGABYTE Global

    You need a motherboard that has a chipset starting with the number 3, or better. Like a B350 or Z370 or Z390 chipset motherboard.

    The motherboard you listed, only supports up to the Intel 7000 series CPUs.



    /edit

    If you need a 2nd opinion, you can use PCPartpicker also...

    Here is your "new" motherboard... System Builder - PCPartPicker

    ...just click on "Edit this parts list", at the top right, and then click on "Choose a CPU".
    PCPartpicker won't let you choose an incompatible CPU.


    You could also start a new parts list at PCPartpicker, and plug in your Intel 9700 CPU, and then click on "Choose a motherboard". You'll see again, that your motherboard and CPU are not compatible.
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  4. KaktusJaque
    Posts : 10
    Windows 10 Pro
    Thread Starter
       New #3

    Awesome Guru, Thanks. I looked at the pin count on the MoBo, and it checked out, just not the run of CPU.
      My Computer
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  6. Ghot
    Posts : 23,288
    Win 10 Home ♦♦♦19045.4355 (x64) [22H2]
       New #4

    KaktusJaque said:
    Awesome Guru, Thanks. I looked at the pin count on the MoBo, and it checked out, just not the run of CPU.


    Yeah, unfortunately the CPUs may fit the socket and still not be compatible.
      My Computer
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