Motherboard Burning CPUs, What Would You Do?

lucas001 on 30/01/2019 - 11:26

Sorry for the long text in advance…

So I built a computer with parts bought from MSY (Jan 18), it was a kind of upgrade as I used the same Case and other peripherals like the SSD and HD, but CPU PSU, RAM, Motherboard, M2 drive all new in the same purchase.
Specs:
PSU Corsair 750W Platinum
Mobo Asrock Fatal1ty Z370
CPU i5 8600K
M2 samsung 500gb
Ram 16gb DDR4 Gskill 3200
(just posting so you know I didn't skimp, all quality parts)
After a few weeks of use, the computer wouldn't boot, no burnt smell or anything… Not overclocked either as I don't need to be any faster.
Took it to MSY and he tested the system, the problem was the CPU that burnt.
I bought an i3 to use until the CPU was back. after a month and a half Intel sent me a new i5..
1 month using the i5, the cpu burn again, this time I could see a small bulge in the lower part and it smelled burnt. They sent it back and another 6 weeks for the replacement. back to the i3…
Got my CPU back but had a 3 weeks trip overseas, so I didn't use itmuch. On my return, I started using my computer and after a couple of months.. system won't boot. This time I take it back to MSY and both CPU and MB don't work. They sent back to warranty, intel already sent me the replacement (this was 03/12/18) but Asrock hasn't. They said the MB might be ok and it was the CPU again, Im I really that unlucky or is it the MB with some hidden problem that is burning the CPUs? or both? 20 years building my own computers and I it was the first time I had a CPU failing on me, thoughts?

Computing Computer Component CPU Motherboard

Comments

  • Gunther on 30/01/2019 - 11:30
    +7

    Have you considered a faulty PSU?

  • stratbargain on 30/01/2019 - 11:33
    +8

    CPU's don't die like that (and def not three in a row)

    Replace the motherboard and/or PSU. I'd ask MSY to replace both personally.

    • [Deactivated] on 30/01/2019 - 11:46

      I agree (except Prescotts)

    • lucas001 on 30/01/2019 - 11:48

      That's what I thought when it first died… hence I took the whole system for them to test (as most of the parts were bought together) and paid for the labor for him to test it. his decision to just send the cpu back.
      With every fail, I asked him to check the MB and the decision every time was CPU is faulty… only in the last time that the MB seems to have died with the CPU they decided to send both CPU and MB. last week I got a call and the weirdest thing happened. as I entered the store, there was a guy with the same problem, same MB model (I know right) and basically they said "though, the MB is not faulty" and the guy complained etc but in the end took the MB back. Then he looked around and couldn't find my MB, apparently they thought it was mine and was for this other customer (maybe if I was 10 minutes earlier, I would have gotten that one and told to suck it up and keep it, then burn another cpu?). now I'm still waiting for a call.. 10 weeks and counting… basically I used the system for a couple months in total due to all these warranty claims during the whole year.

      • garetz on 30/01/2019 - 14:03
        +5

        Why would you pay for labor to test if something was faulty and it was found faulty, it shouldnt cost anything.

  • thatonethere on 30/01/2019 - 11:51
    -1

    Do you need to use thermal paste for the CPU and the heat sink?

    • lucas001 on 30/01/2019 - 13:05

      err.. I assume so. I always use some arctic silver 5

    • stratbargain on 30/01/2019 - 13:16
      +1

      Even if you didn't the CPU wouldn't die. They are smart enough to throttle and even shutdown safely if they are at threat of overheating.

      • lucas001 on 30/01/2019 - 13:20

        forgot to mention I have a Coolermaster Hyper 212, I'm not new to building PCs. First one I built was in 1996.

  • HighAndDry on 30/01/2019 - 13:18

    Not besmirching your good name, but what was the last mobo/cpu you put together? Because normally I'd say this sounds like user error in applying thermal paste, but if you have experience building PCs it shouldn't be that. I'd still double check, but it might be a mobo VRM issue. (Though it might be a very sporadic one because it's not found on testing, and you can actually use new CPUs for a while).

    I'd swap out both the PSU and the mobo, just to be safe.

    • lucas001 on 30/01/2019 - 13:23
      +1

      I've been building PCS since the 90's… never as a job, but I've never had that problem before… before this build I had an i5 4690k, I also built a Ryzen 1700X for my workstation at work last year. I've built a mining rig with 6 GPUs… etc.. I don't think I stuffed up haha

      • lucas001 on 30/01/2019 - 13:25
        +1

        also, the guy from MSY checked if the thermal paste was applied properly before sending for a replacement.

        • HighAndDry on 30/01/2019 - 13:28

          Fair enough. Again, no offence intended - building PCs just gets me in the habit of checking everything including the bleeding obvious.

          • lucas001 on 30/01/2019 - 13:34

            @HighAndDry: none taken mate, I've done pin mod overclocks before to locked CPUs and I never managed to burn a single unit until now. I'm just scared they send me the same MB back, as it never showed any signs of being defective…then it burns another CPU that's out of warranty now.

            • HighAndDry on 30/01/2019 - 13:38

              @lucas001: You've got a gremlin on your hands… I haven't heard of a motherboard that works for weeks and then kills the CPU. Good luck, hopefully MSY just agrees to give you a new mobo (and/or psu).

              • lucas001 on 30/01/2019 - 13:40

                @HighAndDry: is there a way to check the PSU? maybe it's having voltage peaks of some sort? again never had any problems with any PSU let alone a fancy corsair platinum one.

                • HighAndDry on 30/01/2019 - 13:48

                  @lucas001: You'd need an oscilloscope for that, but yeah a fancy Corsair platinum one shouldn't be doing that (heck - half its job is to smooth out power delivery from the wall outlet). I'd still put money on it being the mobo just because there's so many more working parts on that that could go wrong, but if you have a spare PSU lying around, might swap that into the system and stress test it (when/if you get the mobo back) if you still have issues.

                  • Richardc on 30/01/2019 - 14:06

                    @HighAndDry: +1, also ask corsair.

                  • lucas001 on 30/01/2019 - 14:30
                    +1

                    @HighAndDry: that's the problem… they never showed any symptoms.. I even monitored temps, never OC'ed… it just… dies. I have another PSU a 500W thermaltake non modular, prob bronze, I'm sure it will work

  • garetz on 30/01/2019 - 14:19
    -1

    I recommend you cut your losses, buy a new motherboard at your own cost, i recommend an asus, ive had a ASUS ROG Strix Z370-E Gaming running happily with a 8600k since nov 2017 with no issues. However i do not think its your power supply, if it was the power supply it would be more of an immediate issue, and wouldnt take 2 months to burn the cpu. I would say 99.9% chance its the motherboard. Probably faulty power regulation on the motherboard. It would be very hard to determine even for their own manufacturers testing. Like you said it took 2 months for the problem to occur, so how are they going to thoroughly test it within 24 hours at the manufacturers end.

    • lucas001 on 30/01/2019 - 14:32

      agree.. I might bite the bullet and get another motherboard… I was thinking the same… from all the brands I ever had, Asus was the most trustworthy.. Gigabyte and Asrock tho… I had problems with both more than once. could probably compare to Italian cars.. amazing on everything but reliability..

      • garetz on 30/01/2019 - 14:40
        +1

        In my last 4 builds ive only bought asus boards, even the oldest computer which is like 15 years old, all 4 asus motherboard still work flawlessly.

  • lucas001 on 30/01/2019 - 14:51

    trying to find something that would accept overclocking (future proofing) and won't cost more than 300 dollars from Asus… though.

    • garetz on 30/01/2019 - 14:54
      +1

      Try looking at the 10% off ebay sale, and reputable resellers in your state.

      • lucas001 on 30/01/2019 - 14:59

        yeah I just saw that thanks mate… any recommendations on a model from Asus comparable to that Asrock one?

  • edathor on 30/01/2019 - 20:54
    -4

    Buy some marshmallows!! :-)

  • 13 on 31/01/2019 - 09:38
    -2

    Swear

  • lucas001 on 04/02/2019 - 14:02

    so 2 months have been passed and no word from MSY, is there anything I can do, other than harassing them every week? which does nothing to speed up the process anyway.
    Ps.: apparently my board arrived. so all good for now

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