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Abrupt Crash: Strange GPU Behavior

 
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post #1 of 10 (permalink) Old 12-02-2014, 07:28 AM - Thread Starter
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I scanned the list of forums, but couldn't find anywhere else to put this. I put it here because while I've seen a Windows machine crash more times than I can count, I've never seen it crash and then, seconds later, drop the video card.

This has happened twice in the last couple weeks. The first time, from the desktop, the computer halted, sat for a few seconds, and then the monitor went into power-saving mode (no signal) while the machine was still on. The second time, it happened during a full-screen video game. It hung for a little while, and then the screen started puking unpleasant white noise through its pixels. These were both hard crashes, no CTRL-ALT-DEL or anything, the only fix was a hard shutdown, after which the computer booted fine both times. The Event Viewer shows the kernel-power warnings that come with a computer booting after an unexpected shutdown, but there's no warning or error before the machine stops responding.

I'm beginning to be concerned that I have a hardware problem. I don't think it's heat related, I'm moderately overclocked on the CPU, but also water-cooled, and rarely see temps higher than 40c. My video cards are at stock clock and rarely top 60c.

Does anyone have any insight into this? Or, if a mod decides this might be better elsewhere, can you move my thread there? =)
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post #2 of 10 (permalink) Old 12-02-2014, 07:30 AM
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What graphics card? What brand? Which driver revision?
Use RigBuilder in top right corner so we can get a better idea whats going on.
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post #3 of 10 (permalink) Old 12-02-2014, 07:46 AM - Thread Starter
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Okay, here's the link to my rig: https://www.overclock.net/lists/display/view/id/6031843

Some stuff is left out, I'll polish it up later. Thanks for showing me that feature, I had missed it entirely. =)

If I remember right, my current graphics driver is the latest stable from AMD, Catalyst 14.4.
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post #4 of 10 (permalink) Old 12-02-2014, 07:51 AM
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post #5 of 10 (permalink) Old 12-02-2014, 08:13 AM - Thread Starter
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I haven't yet, because it's run for nearly a year with CFX and no such issues. I'd shrug this off if it only happened once, or even once in a great while, but twice in two weeks unsettles me.
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post #6 of 10 (permalink) Old 12-02-2014, 08:15 AM
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post #7 of 10 (permalink) Old 12-02-2014, 08:18 AM - Thread Starter
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Do you think from my description that the cards are likely to be the problem?
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post #8 of 10 (permalink) Old 12-02-2014, 08:20 AM
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post #9 of 10 (permalink) Old 12-02-2014, 08:25 AM - Thread Starter
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Alrighty, I'll give it a shot tonight when I get home and report back.
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post #10 of 10 (permalink) Old 12-02-2014, 05:36 PM - Thread Starter
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Well, my machine did it again this afternoon, but this time it managed a reboot instead of just a hang. I returned my CPU to stock clock, and began running tests.

Both SSDs checked fine from chkdsk; I know this probably doesn't mean much, but they did.

Windows Memory Diagnostic ran, and hung at 99%. I heard the CPU fan back off when it should have completed the test, but the screen just sat there, accepting no input.

Ran MemTest86, all passes completed with zero errors.

Ran a quick FurMark benchmark, got the cards hot, no artifacts or hang.

I will keep the clock at stock, and report here again if I crash.
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