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Computer shuts itself off, won't go to bios, two hours later it boots fine?

post #1 of 11
Thread Starter 
Umm wth happened?

With my sig rig (212+ is still not installed), I was sitting at my computer debating in the Nvidia forums, when I answered a phone call and while sitting staring at my non-active chrome, my computer shuts down suddenly. I started thinking, oh ****, first day someone reports the DCII 570s aren't completely immune from weak VRMs, I find out the hard way.

So I make the attempt to boot the computer. It turns on, I get the beep from the motherboard, and then when my monitor gets a signal, the screen is solid white with a green bar in the middle of the right hand side, and after about 5 seconds, the screen fades to black leaving the green bar, which fades out after another ten seconds. So amid my attempts to make sailors within 150ft blush, I pull out my old 9800GT and plug it in. Same exact thing. At this point, I'm thinking my motherboard is gone again (I lost a AM2 board ~15 months ago), so I pull the 9800 GT and attempt integrated. Same exact thing. I put the 9800 GT back in (since it had been using my 570's antistatic bag), and just close the case up, planning to just go to microcenter in the morning and get a 2500k/Asus Sabertooth and some DDR3 RAM. (Gigabyte's RMA says plan for 3 weeks processing not including shipping, not acceptable with finals in 3 weeks)

Once I've got this all fairly planned out, I remember that I've got a term paper due tomorrow so I sent my professor an email asking for an extension, and offered a video of the problem as proof when I see her on Thursday. When I then went to make the video (nearly 3 hours after the self-shutdown), the computer booted fine, with the 9800GT still in it. I thought "no way" so I put my 570 back in. It booted fine, and I'm posting from it now. (After copying the relevant term-paper files off my hard drive)

Clearly, something overheated, but the question is what, and should I be overly concerned(I'm taking a can of air to it after I post)? My CPU is sitting at 32C on all cores as I write this, so I don't think that that was the problem.

I don't know what applies to what, but my motherboard temps in CPUID are (current/max/min since reboot):
TMPIN0: 40C/40C/37C
TMPIN1: 39C/44C/38C
TMPIn2: 44C/46C/44C

Edit: One thing I now need to mention between the capacitors and VRMs, there appears to be either a scratch on the board or a bit of excess TIM, but both of these seem impossible due to it's positioning in a channel not 5 mm wide. I originally thought it was dust, but compressed air didn't do anything to it.
Edited by -Apocalypse- - 4/9/11 at 10:23pm
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post #2 of 11
i think your NB may have overheated and caused a thermal shutdown, id still replace the mobo/cpu myself, cause its too risky
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post #3 of 11
Thread Starter 
Quote:
Originally Posted by PCSarge View Post
i think your NB may have overheated and caused a thermal shutdown, id still replace the mobo/cpu myself, cause its too risky
I was thinking along the same lines, but doing this just sitting on chrome with like 3 tabs open? I played ACB for like 3 hours on Friday.

Also, before someone asks, both the CPU and NB were at stock, I wasn't overclocking the CPU til I installed the 212+.
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post #4 of 11
Sometimes, weird things happen. It's been my motto that if it fixed itself, it must have known something I didn't... I pet the computer and softly whisper "good job...". If it happens again, pet the computer again and ask it to fix itself again...
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post #5 of 11
Your mobo, not the GPUs, could have weak VRMs
It is possible that OCP kicking in and shutting down the board. On Gigabytes OCP usually happens as shutdowns.

Running a 125W x6 on an unheatsinked 4+1 of an older, cheaper design of 2007-2008 with known problems is a bad idea to begin with. You shouldn't even put that 212+ on as it'll ensure that the VRMs are uncooled and highly increase chance of failure/overload. Get a new motherboard first.
post #6 of 11
Thread Starter 
Quote:
Originally Posted by xd_1771 View Post
Your mobo, not the GPUs, could have weak VRMs
It is possible that OCP kicking in and shutting down the board. On Gigabytes OCP usually happens as shutdowns.

Running a 125W x6 on an unheatsinked 4+1 of an older, cheaper design of 2007-2008 with known problems is a bad idea to begin with. You shouldn't even put that 212+ on as it'll ensure that the VRMs are uncooled and highly increase chance of failure/overload. Get a new motherboard first.
This mobo wasn't supposed to be a long term solution. I got myself a 1090T back in December, and intended on having a Crosshair IV shortly afterwards. Then the news on AM3+ reaches me, and I think ok, I'll wait on that so I have an upgrade path (I was rather distraught at 20 days after buying a new CPU sandy bridge came in and bent it over at the same price range). I was also holding off on the 212+ for the exact reason you stated.

So consensus is new motherboard? I don't fully trust this AM3+ compatibility not being similar to my setup (6-cores on AM2+), so I'll probably make the swap over to a 2500k as going to AM3 would require new ram anyways, so I might as well get the processor too.
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post #7 of 11
Well what makes it a maybe is that it probably wouldn't happen with only chrome open and idling, it'd happen at load
I don't even think that pre-ultra durable designs contain OCP...
post #8 of 11
@ OP, your motherboard doesn't have VRM cooling so it's overheating which is causing the shut downs. You need a motherboard that has VRM cooling if you want to overclock and not have your motherboard die on you.
     
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post #9 of 11
post #10 of 11
Thread Starter 
Quote:
Originally Posted by xd_1771 View Post
Well what makes it a maybe is that it probably wouldn't happen with only chrome open and idling, it'd happen at load
I don't even think that pre-ultra durable designs contain OCP...
It's an Ultra-Durable 3 board. I'm also confused as to why this would happen while web browsing and not while gaming though.

Quote:
Originally Posted by EpicPie View Post
@ OP, your motherboard doesn't have VRM cooling so it's overheating which is causing the shut downs. You need a motherboard that has VRM cooling if you want to overclock and not have your motherboard die on you.
This is the first time that's happened, and only my graphics card is overclocked, CPU/NB are at stock. I knew about the VRM issues so I didn't overclock my cpu.

Would continued running of this computer, if it is the VRMs failing, be dangerous for my 1090T, or would the motherboard not likely damage the 1090T? If the board is failing, I'd like to get it to break down enough to RMA it, but not if it's likely the processor would go too.
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