New PC won't boot, lights blink & fans turn when connected with PSU

By Lisixz ยท 4 replies
Dec 29, 2015
Post New Reply
  1. I've put all my parts together and turned the PSU on, but not the PC yet, the fans were spinning for a second but stopped working for a few seconds and then started again, same with the lights on the Motherboard and the GPU - they were just blinking. Then I've turned the pc on, the fans started running normally, but the lights were still blinking. I've already taken it out of the case and built it on a cardboard box, but it was the same. I don't know what to do...
    My specs:
    Intel I-7 6700k
    Gigabyte Geforce GTX 970
    Asus Z170 deluxe
    Corsair H100i GTX CPU watercooler
    Samsung SSD 850
    Corsair Vengeance LPX 2x8 GB
    bequiet pure power 630 W
    Corsair Obsidian Series 750D case
  2. Lisixz

    Lisixz TS Rookie Topic Starter

    Update: I called a friend of mine and he suspects that the Motherboard might be faulty, causing a short-circuit - what do you guys say?
  3. Cycloid Torus

    Cycloid Torus Stone age computing. Posts: 3,019   +661

    You might wish to check over this to be sure you didn't miss something...

    Is there a troubleshooting section in the motherboard manual?

    Double check all connections to the motherboard.

    Did keyboard LEDs flash indicating BIOS recognition?
    Did anything appear on display?
    Did you get any 'beeps'? Any kind of pattern?
    Motherboard LED flashing in a pattern?
  4. EliteCustard

    EliteCustard TS Rookie

    Your reset switch is probably in wrong. Try putting it in another way. Don't worry, nothing is broken
  5. captaincranky

    captaincranky TechSpot Addict Posts: 13,002   +2,532

    Try booting the PC with only one stick of memory. Try both sticks in turn, if only to rule out that as a reason for the PC not "POST-ing. (Power On Self Test).

    An incorrectly installed heat sink fan assembly would also cause a premature shutdown.

    Also, if one of the PSU voltages is off, improperly connected, or non existent, that could also cause those symptoms.

    EDIT: IIRC, without a HDD (or SSD) connected to the system, the machine will boot directly to the BIOS. That might be worth a try as well.
    Last edited: Jan 16, 2018 at 1:37 AM

Similar Topics

Add your comment to this article

You need to be a member to leave a comment. Join thousands of tech enthusiasts and participate.
TechSpot Account You may also...