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New PC boots but then turns off and boots again

Hi there,

I just built this pc a few hours ago but I can't seem to figure out why the screen stays blank and why it does as described below.

Specs:

PSU: CM G550M
CPU: Intel Core I5 7600k
Mobo: Asrock Z170M Extreme 4
Ram: 2x 4GB Corsair vengeance 3200mhz
SSD: SanDisk 128GB
HDD: 1TB WD Blue


This is what happens.

Please see this YT link for a demonstration: https://youtu.be/eLvS8W1e0dE

You start the pc and it will shut down after about 10 seconds. After that it wil start up again and it will keep running for as long as i please but there just wont come anything on the screen. It stays completely blank.


Mouse and keyboard don't get any power either.

Btw, I have followed the troubleshoot guide for not booting pc after newly built over here on Tom's.

Thanks!
4 answers Last reply Best Answer
More about boots turns boots
  1. Download memtest86+ and test your ram.
  2. bas.marijn.wilson said:
    Hi there,

    I just built this pc a few hours ago but I can't seem to figure out why the screen stays blank and why it does as described below.

    Specs:

    PSU: CM G550M
    CPU: Intel Core I5 7600k
    Mobo: Asrock Z170M Extreme 4
    Ram: 2x 4GB Corsair vengeance 3200mhz
    SSD: SanDisk 128GB
    HDD: 1TB WD Blue


    This is what happens.

    Please see this YT link for a demonstration: https://youtu.be/eLvS8W1e0dE

    You start the pc and it will shut down after about 10 seconds. After that it wil start up again and it will keep running for as long as i please but there just wont come anything on the screen. It stays completely blank.


    Mouse and keyboard don't get any power either.

    Btw, I have followed the troubleshoot guide for not booting pc after newly built over here on Tom's.

    Thanks!



    Hi, The board needs a BIOS update for supporting the CPU. Can you return the board?
  3. Thanks for the answer Alexoiu. I will probably just send the mobo back to the store indeed. Its just faulty i guess.
  4. Best answer
    No problem. Buy instead a Z270 board. It supports the Kaby CPU without BIOS updates needed.
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