Computer locks up after loading game, hard reboot required

Discussion in 'Videocards - AMD Radeon' started by johnnyb11, Aug 25, 2013.

  1. johnnyb11

    johnnyb11 New Member

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    GPU:
    7950
    I am running 7950s in crossfire on my computer. Anytime I launch a game, my computer just locks up and this hardcore buzzing sound playing right when it crashes, the sound continues while the computer is frozen. Only way to fix is to hard reboot my computer.

    This problem has happened in both Battlefield 3 and Splinter Cell Blacklist. I have enabled Crossfire and Crossfire for applications that have no associated profile. In GPUz, it says my cards are enabled for crossfire. . I bought the second 7950, cpu, and motherboard together, then put the build together. This Windows and drivers are a fresh install, and I am not overclocking anything. I also have disabled ULPS via MSI Afterburner.

    Any ideas on this?

    Here are my specs:
    Windows 8 64bit
    AMD 13.8 beta 2 drivers
    CPU: 4670k
    Motherboard: Gigabyte Z87X-UD5H
    RAM: 16GB Gskill (stock 1.5volts)
    HDD: OS on a 120gb ssd, games on a 2tb WD Black
    PSU: 750w Corsair
     
  2. Pill Monster

    Pill Monster Banned

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    GPU:
    7950 Vapor-X 1100/1500
    When did it start happening? What 7950's do u have....does it lock up with single card?
     
    Last edited: Aug 25, 2013
  3. johnnyb11

    johnnyb11 New Member

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    GPU:
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    My first:http://www.newegg.com/Product/Product.aspx?Item=N82E16814202006
    My second: http://www.newegg.com/Product/Product.aspx?Item=N82E16814202026

    When I had my first, I had no problems with my build. I then bought a new 7950 (the second), the 4670k, and z87x-ud5h. Put the rig together, setup crossfire, and then the games began crashing.

    When I do not have crossfire enabled, my games run with zero problems. This problem has to either involve the second card, or how crossfire is setup.

    I only have one bridge on my cards. Am I supposed to have two? Should I test my new second card to see if anything happens?
     
  4. ---TK---

    ---TK--- Ancient Guru

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    GPU:
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    See if you can run the psu test in occt
     

  5. johnnyb11

    johnnyb11 New Member

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    GPU:
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    Is it as easy as clicking on the Power Supply tab and clicking On?

    How long should it be ran for?
     
  6. ---TK---

    ---TK--- Ancient Guru

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    An hr or so. See if it freezes or shuts off the pc.
     
  7. Pill Monster

    Pill Monster Banned

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    GPU:
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    Try each card separately in case you have a dud.
     
  8. johnnyb11

    johnnyb11 New Member

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    Alright. I tried both in the top PCIE slot. Both launched the game (Blacklist) just fine, no crashes or anything. I put new card on top, old card under. Attached bridge, turned computer on, enabled crossfire, and disabled ULPS. Restarted my computer, launched Blacklist and once I hit actual in game, my computer crashes and reboots.

    I checked in GPUz, and it's saying that both my cards are running at PCI-E 3.0 x 16 @ 8 1.1. When I hover over the Bus Interface, it says it supports x16 3.0, but is running at x8 1.1.
     
  9. Pill Monster

    Pill Monster Banned

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    GPU:
    7950 Vapor-X 1100/1500
    That board runs in x16/x8 mode when Crossfire is enabled.

    What BIOS u got?
    There's a new F7 out and release notes say it improves PCI-E compatibility so might be worth a shot.
     
    Last edited: Aug 25, 2013
  10. johnnyb11

    johnnyb11 New Member

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    Already running latest.

    Shouldn't they be running in PCIE 3.0, though?

    [​IMG]
     

  11. Pill Monster

    Pill Monster Banned

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    GPU:
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    It's in low power mode. If you click ? next to PCI-e info and start render you'll see it switch back to Gen3.
     
  12. johnnyb11

    johnnyb11 New Member

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    Ohh, gotcha. That does change it.

    Well, I'm all out of ideas. The power supply test did nothing, my computer ran fine aside from it becoming toasty in my room. I do not understand what is causing this to break.
     
  13. Pill Monster

    Pill Monster Banned

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    Try the other PCI-e slots in CF as well, try all of them. They're only x4 but shouldn't matter.

    Do u have onboard disabled?
     
  14. johnnyb11

    johnnyb11 New Member

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    The power supply is in the way, so only way to really test it is to yank all the stuff out.

    Onboard is disabled, yes.
     
  15. johnnyb11

    johnnyb11 New Member

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    GPU:
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    So, I completely uninstalled 13.8. Now using 13.4 and I am having no locks ups or crashing.

    I did one little test, however. I have ULPS enabled. I went into BF3, disabled vsync and got >120fps. I then exited the game, disabled ULPS, and restarted. Started BF3 and disabled vsync. I only get about 55fps.

    Both cards had usage with ULPS was enabled and disabled. Any chance of a remedy for this? Shouldn't it be the other way around?
     

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