Damaged my mobo?

So last week i upgraded my cpu and mobo. A gigabyte z370 gaming 7 board and i7 8700k.
When installing the heatsink i forgot to use those small rubber rings before tightning screws on the heatsink and that made little scratches near holes on mobo. Later i remembered and re did the screws properly after putting rubber rings but got worried that i might have damaged the mobo. Anyway i booted and it worked fine so i installed windows/drivers/games the usual stuff and everything had been working fine. Fast forward a week to today and i started my pc and it worked fine for 30 minutes and then it immediately turned off and tried to do a restart cycle but failed. I turned it off and on again 5 minutes later and i can hear the mobo click sound starting following by another click immediately and it turn off. I can see the RAM leds but no fan even starts.

So far i have been at a loss. I have been trying to troubleshoot it for past couple hours but none is working. You know the usual stuff, taking off ram 1 by 1, unplugging all sata ports, replugging cpu connector etc but same. What are the chances that my mobo power delivery has been damaged due to my stupid mistake?

Edit: Forgot to mention that my PSU is Corsair AX1200i. An unlikely candidate for culprit.
Reply to Sohaib
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  1. Well I dont know whats wrong but im fairly sure a little bit of scratches near the holes wont do anything, mobo manufactures know accidents happen, and when you are screwing something into electronics they know stuff can happen, so they usually dont put anything around the holes. So its not the scratches.
    Reply to Saturnity
  2. Saturnity said:
    Well I dont know whats wrong but im fairly sure a little bit of scratches near the holes wont do anything, mobo manufactures know accidents happen, and when you are screwing something into electronics they know stuff can happen, so they usually dont put anything around the holes. So its not the scratches.


    You are absolutely right, it turned out to be my PSU. Yes i am still dumb-founded how a less then 3 year old Corsair AX1200i can go bad but it happened. I am extremely annoyed right now. Sadly in my country electronics usually only have 1 year warranty.

    Rightnow i am running my rig on a Corsair TX750M and i dunno if its enough to handle my system.

    i7 8700k
    gigabyte z370 gaming 7
    ddr 4 16 gb 3 ghz
    gtx 1080 ti
    7 mechanical 3.5" hdds + 1 ssd (sata)
    asus xonar d2x pcie card
    4 port sata card (pciex x8)
    5 200mm case fans + 1 140mm fan

    Right now i am not applying any OC to anything because i don't think the PSU can handle the load. Might upgrade down the road, will try to get an HX1000i atleast.
    Reply to Sohaib
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