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Another random restart thread.

post #1 of 11
Thread Starter 
Hey everyone, so I'm having a huge issue that I'd like to resolve today on my day off. In random intervals for no rhyme or reason my computer will hard reset itself, completely losing power it seems, then turning back on a few seconds later.

I've had this problem since I first built this machine, but it seems to be getting worse lately, either that or I'm just using it a lot more and noticing it. I've ran a memtest86 which did 3 or 4 passes fine, but it DID randomly restart during the memtest, leading me to believe it is a hardware issue. Also I got 2 restarts in my BIOS as well indicating further it is not a windows problems.

It is completely random, and does not occur more frequently under load. I ran prime95 for a few hours this morning and it worked fine, and I do bitcoin mining while I'm at work which is running fine.

If anyone could please give me some advice on what my next step should be, I'd really like to have my custom built gaming rig not randomly resetting on me.

Thanks
Chris

EDIT: By random I do mean completely random, sometimes it doesn't happen for a day or two, then it will happen 3 times in the same day.

EDIT 2: I don't know how to put my rig in my signature so here is a link

http://www.overclock.net/lists/display/view/id/4870080
Edited by Niexist - 3/25/13 at 10:37am
post #2 of 11
I am in the same boat. Did I solve my problem? Nope. I am suspicious that my problems are related to my power supply. Idk. Powersupplies are often the culprit in these types of things.
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Deus Ex Machina
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post #3 of 11
Thread Starter 
Well it got worse today, now I'm getting BSOD constantly within 2 minutes of logging into windows. Now I have to fix this to diagnose my original problem. Not to mention download 500 gigs of steam junk again.
post #4 of 11
AS Crimsontears said, it could be PSU related, it could even be causing the BSOD's
If you can, try another PSU and see if the problem continues

Possibly a bios glitch, and an update would resolve it? Could be risky updating it, if it is the PSU that is unstable

That's a terrible situation to be in, hope you manage to come right soon
Nothing V2
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post #5 of 11
I would say try to check the PSU voltages in the BIOS inbetween restarts. See what they read. I had the same exact issue a while back and it turned out to be a faulty PSU. If you have a spare power supply hook that up and see if the issue continues.

I think it could be either a psu, BIOS issues, Bad CMOS battery, or a bad mobo.
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post #6 of 11
Power supply or motherboard.
    
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post #7 of 11
Thread Starter 
I tend to agree with the conclusion of MOBO, or PSU, just because of the randomness of the restarts, and the fact that it did one in memtest86 which I believe is its own OS. Anyway I feel like I'm at the limit of my knowledge, so I took it into a local computer repair shop that has excellent reviews on yelp for a 35 dollar diagnostic. I feel like I'd spend too much time trying to figure it out on my own.

Also the MOBO is refurb'ed through NCIX.
post #8 of 11
Thread Starter 
Well the shop fixed the BSOD, which was apparently something I screwed up in the BIOS. They couldn't however duplicate the random restart. They did test the PSU and said that it was working fine, but told me there is no real way to test if it is a motherboard problem unless they actually see it happen which they didn't in 3 days time they had it. They were pretty knowledgable, and I believe them about the PSU being fine, so that really narrows it down to the motherboard in my opinion.

I ordered an uninterruptable power supply that I'll try and if that doesn't work the next step will be swapping out the motherboard.
post #9 of 11
Thread Starter 
Soo, pretty embarressing but I think I've resolved the issue, I went to fry's and bought a P8Z77-H pro motherboard, come home and begin disassembling mine. The first thing I notice is that the 24 pin power connecter to the motherboard is not fully locked in. It actually took pressing to the point of flexing the motherboard to get it stuck in place, and I figured hey I'm replacing it anyway.

However when I rebooted with the original motherboard, and the power connecter actually in place, I haven't had a restart all evening, and normally I would've seen at least one. Also my mouse seems to be performing better. Where before I would start to lose mouse control when I was downloading at high speeds, just a bunch of little small problems seem to be resolved.

I'm holding my breath and I'll do some bitcoin mining tonight, but if everything looks okay, I'll take this 200 dollar replacement motherboard back to fry's in the morning. Here's hoping.
post #10 of 11
Thread Starter 
Well I haven't had a restart in 2 days now. I'll officially call thise one case closed. Who would've thought the 24 pin being not completely in place could cause random power failures like this.
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