My GTX 970 is probably fried, trying to be sure it's not PCI-EX slot

Discussion in 'Videocards - NVIDIA GeForce' started by Nerat, Aug 13, 2017.

  1. Nerat

    Nerat New Member

    Messages:
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    GPU:
    GALAX GTX 970 EXOC
    Hello guys,

    I fried my GTX 970 during process of switching fan plugs connected to GFX fan header while the PC was powered and accidentaly shorted (i asked for it i know).

    Something was definitely burnt, i felt that soothing smell of burnt silicon. HOWEVER, PC kept working without any issues, fan header kept working (fans are still spinning), so i didn't worry at first. It was when i turned it off to close the case and turned it on again that my GPU LED on my mobo was on. There was signal from the GPU but it was just black screen and GPU did not post hence the error on mobo LED.

    I switched to IG and PC booted fine. I don't have a spare card to test pci-ex slot. But i disabled PEG from BIOS and booted to Windows with 970 plugged in to see whether it will be recognized in device manager.


    Here's what happens in different scenarios i could test:

    GPU fans spin at full speed with pciex power cables plugged in, black screen, no post.

    GPU fans spin at full speed with pciex power cables NOT plugged in, black screen, no post.

    So definitely power is supplied from PCI-EX slot.


    With PEG disabled from BIOS (only IGP is enabled), system boots up. Here's the screenshot from different softwares.

    [​IMG]

    Device manager reports code 43.

    So my question is, can we say it's 99% GPU? I don't want to order a new GPU only to find out that my mobo was bad.
     
  2. mikev190

    mikev190 Master Guru

    Messages:
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    GPU:
    Zotac 1080Ti AMP! Extreme
    Best way to confirm is to try use a different GPU and see if it works ok
     
  3. Nerat

    Nerat New Member

    Messages:
    8
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    GPU:
    GALAX GTX 970 EXOC
    I wouldn't bother all this if i had one lying around.
     
  4. bensmooth

    bensmooth Active Member

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    GPU:
    Gigabyte 980 GTX TI 6GB
    Unplug and set on wood leave for max 24 hours

    leave it on a piece of non varnised wood for about 24 hours to make sure all the voltage has left every transistor/capacitors etc on the gpu. The place back into system and see if she gets past post. As if you shorted the gpu voltage will still be lingering on the resistors/capacitors in the pcb even when pc has no mains lead "gpu will still hold small amount of energy in them for hours!.

    Then replug the gpu back into mobo and try again
     

  5. Hammie

    Hammie Master Guru

    Messages:
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    GPU:
    760 SMG 28" 1ms 3840x2160
    Sorry to hear this, sounds like def the GPU is shot,, video card may still work but GPU is shot,,, Try another card on that slot if you think its the slot. Or try the video card on a different PCIe 16x slot. Either way I believe you shot the GPU but didnt totally destroy the card itself. Get a temporary card and RMA it , But you must make it look like how it did when you first bought it. THis is the problem with custom fans. I think Video card custom fans are pointless. The GPU fan goes up in speed as soon as you launch a game and does the job.. Who cares if your max is 75c and with a cooler its 70c or so. Your OC will still work fine. These cards are built to go to 90c and up. Custom fan for 5 degrees less is pointless. The fan the card comes with is fine, the video card is silent on your desktop,, but when you launch a game it speeds up and sounds like a jet,,,, it does the job just fine. You can OC all you want same result. As long as it doesnt go to 95c your fine.
     
  6. Nerat

    Nerat New Member

    Messages:
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    GPU:
    GALAX GTX 970 EXOC
    The thing is i had to find a solution because the original heatsink's base was sunk inwards half a mm and it was not making full contact. This lead GPU to hit 90C immediately after going under load and throttle. I installed Kraken G10 with TT Water Performer 3.0. It was fine until i decided to add another fan to radiator for push/pull. Radiator was getting extremely hot.

    My mistake was to switch fan connectors while the PC was running, especiaaly the one that connected to GPU fan header. It was basically asking for it. I think i toasted VRM. You can see the pics below. Anyways i ordered a Gigabyte G1 Gaming 1080 and i will test the slot with my friend's old 560 ti. But i'm pretty convinced it's the card. I sent it to a repair shop, i might find out tomorrow how bad it is. If it's recoverable, it's good maybe i can sell it. If not, well, **** happens. And it surely happens if you specifically ask for it. Not that i didn't know that was dangerous, it was just i was too lazy. Lessons learned.

    Reasons that led me to believe the slot and GPU itself is fine:

    System kept running after i shorted the card and smelled the burn. Video was OK, everything seemed normal, i shut down normally.
    Slot itself was powering the card (fans spinning).
    Windows properly recognizes the card, except it cannot be started.

    https://i.hizliresim.com/RPlRGa.jpg
    https://i.hizliresim.com/pWpVNq.jpg
    https://i.hizliresim.com/kWyR8r.jpg
    https://i.hizliresim.com/aGbRNB.jpg
    https://i.hizliresim.com/YN7REj.jpg
    https://i.hizliresim.com/mkWZNP.jpg
    https://i.hizliresim.com/ER4MAq.jpg
    https://i.hizliresim.com/jWGRNj.jpg
     
    Last edited: Aug 15, 2017
  7. airbud7

    airbud7 Ancient Guru

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    GPU:
    MSI RX 480 ARMOR 4G OC
    Yea...I see the burnt spot/ But hey!, look on the bright side....you needed a new 1080 anyway!...:D
     
  8. Nerat

    Nerat New Member

    Messages:
    8
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    GPU:
    GALAX GTX 970 EXOC
    Well, it was a bit stretch to my budget, unplanned, but due to current status of market after mining craze, it was the only logical choice. What i had was already still decent at 1080p. I didn't want to downgrade, pay for something that is par, my only choices were 1070 and 1080 :D. I'm optimistic about a possible repair though, maybe i can recover some of the cost. We'll see.
     

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