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Sudden Failure - Recent Core2 Build

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January 10, 2007 5:06:56 AM

It's mostly in my sig, but I'll post it up here too:

System specs:
-----------------
Intel E6400
Gigabyte 965P-DS3
500GB Seagate 7200.10 SATA
2 x 1GB Corsair XMS2 PC2-6400 C4
Tuniq Tower 120
OCZ GameXStream 700W
Sapphire X1900XT 256MB W/Acclero X2 cooler
Samsung SH-182D DVD +/- RW
Aerocool ExtremEngine3T case.

Overclock settings:
-----------------------
FSB: 425MHz
CPU Multiplier: 8
PCI-E frequency: 100MHz
vcore: 1.300V
FSB voltage: normal
MCH voltage: normal
PCI-E voltage: Normal
RAM: 1:1 (850MHz), 4-4-4-12, 2.1V

So I recently (yesterday) replaced my X-Finity PSU (ick) with a GameXStream 700W, and my Zalman 9700 with a Tuniq Tower. Everything seemed fine, and I was testing my overclock out at a slightly lower voltage (1.300 instead of 1.325 I had on my old crappy PSU) with dual-orthos (one Gromacs, one small FFT).

Looking at it every now and then, it ran fine for several hours at a temp of about 45C (CoreTemp) but I went to look at it again and it was frozen, and the temp had risen to 54C (I guess just before the freeze-up).

So I rebooted. Or I tried. I get nothing. No POST, no beeps, nothing on the screen (stays in power-saving mode), absolutely nothing. I crank up the fan control for the Tuniq, it doesn't seem to move at all. The keyboard appears to do nothing, and the mouse doesn't light up.

The PSU does turn on. Its fan spins, and its nifty blue light lights up. All the connectors are still plugged in tightly, as far as I can tell. The DVD drive makes its normal little noises, and the case fans spin. the fan on the video card runs, and if I turn it on without the 6-pin PCI-E power connector plugged into the card, a little red light still comes on on the card, so it must be getting power through the PCI-E slot.

Any ideas? Anyone? I have a hard time believing I permanently damaged my CPU at such a low voltage, and the only other voltage I upped was RAM, and it was within spec for the sticks.

The entire system is only a month and a half old, the PSU and Tuniq are brand spanking new. The PSU is vastly superior to my old POS Ultra. I was very careful when I disassembled and reassembled everything, wearing an antistatic wrist strap, and working on an antistatic mat. And it all worked brilliantly until an hour or so ago.

Am I the victim of an act of God? This makes me a saaaad panda :cry: 
January 10, 2007 5:17:45 AM

No Guarentees but that problem sounds like my oldish one, also using corsair XMS, what i did was to the ram out and put it back in in different order, i did this like 10 times but it worked!!!! :D 
January 10, 2007 5:25:24 AM

Hmm, really? I have my doubts, given that it's worked magnificently up until this point.

I'll guess I'll try anything at this point, though. But maybe not tonight. It's getting late.
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January 10, 2007 5:32:57 AM

I dont know how t worked, but it did so i aint complaining.
January 10, 2007 5:36:51 AM

Well, I did just try it once, no luck yet. :( 
January 10, 2007 7:02:30 AM

Got a multimeter? If you unplug all the power connectors, and ground the green wire on the 24pin ATX connector, it'll turn the PSU on. Then, use your multimeter to see if all the lines are producing voltage. Perhaps it's a rail problem?
January 10, 2007 10:54:15 AM

That sucks. Good thing you didn't update bios to F8 if they had one.

What I'd do:
- clear cmos & try it
- put the old psu back in the case & try it
- take everything out & build a barebone & try it

It was still better than my E1000W which will shut down to protect my parts if I plug a 4-pin molxe in the mobo which has one, as if it had a mind of its own. My old E600W worked perfect with everything plugged in. The OCZ is a good one. My friend has been using it for over a month now.
January 10, 2007 2:33:09 PM

Tried CMOS clear pretty much first thing - nuthin'

I did buy a multimeter a while ago on a whim.

I'm loathe to try my lame-ass ULTRA back in place of the OCZ, but I'll definitely give it a shot.

I think all this will have to wait until after work today, though, I don't have the time right now. I'll let you guys know how it goes.
January 11, 2007 1:31:53 AM

OK, I put the old ULTRA back in there, no good, same problem. At least I can be fairly sure the problem's not the PSU given I'm 100% sure the old ULTRA worked when I took it out.

I also tried:

Only mobo, CPU, and HSF - nothing
added 1 stick RAM - nothing
added hard drive - nothing
added video card - nothing

So I've still got a big fat nothing. Man, things can go from really good to really bad really quickly, can't they?


I'm thinking the board's bad. Maybe I stressed something on the board (I'd like to think not, but hey, it's possible) while swapping things around, and it gave after a few hours under the weight of the Tuniq. Or maybe I just had a freak failure and no one's to blame.

Or could it be the CPU? But then wouldn't the board probably bitch about it, or something? Any ideas?

Or should I RMA the board? It has a 3-year warranty, and the retailer I bought it from will handle RMA within a year of the original purchase date.

DS3 - Durable my ass!

[sigh]

Guess I'm stuck with "old faithful' for now. My trusty Prescott Pentium 630.
January 11, 2007 5:35:38 AM

Quote:
No Guarentees but that problem sounds like my oldish one, also using corsair XMS, what i did was to the ram out and put it back in in different order, i did this like 10 times but it worked!!!! :D 



Dude the problem is, probably, that a piece of dust or ususally a hair finds its way to the memory slots, hindering the connection of all pins. It happened to me couple of times and in the begining I almost paniced.
Try blowing the memory slots or gently vacuuming them.
January 11, 2007 5:41:56 AM

Allthough it shouldnt be the case with OP's error since it already worked fine.
You can try anyways.
January 11, 2007 5:46:20 AM

Quote:
OK, I put the old ULTRA back in there, no good, same problem. At least I can be fairly sure the problem's not the PSU given I'm 100% sure the old ULTRA worked when I took it out.

I also tried:

Only mobo, CPU, and HSF - nothing
added 1 stick RAM - nothing
added hard drive - nothing
added video card - nothing

I'm thinking the board's bad. Maybe I stressed something on the board (I'd like to think not, but hey, it's possible) while swapping things around, and it gave after a few hours under the weight of the Tuniq. Or maybe I just had a freak failure and no one's to blame.

Or could it be the CPU? But then wouldn't the board probably bitch about it, or something? Any ideas?



Actually it does look like something is dead there. Do you have a chance testing the cpu and mobo separatly? That would tell i think.
January 11, 2007 5:52:07 AM

oh one more thing - you can redo the cmos clearing without the battery and with electricity disconnected.
maybe .. just mayyyybe....
January 26, 2007 5:08:04 AM

My replacement mobo came this week, finally got some time today to put it all together - it's alive! Oh, POST beep, you're the sweetest sound I've ever heard!

Thanks to all who helped diagnose the problem.
!