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Build issue/crash please help!!! Crash in prime95 and other stuff

Last response: in Systems
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March 7, 2010 6:04:50 AM

Well I just finished my first build, but have been having an extremely frustrating problem. I've asked elsewhere and have had no luck. I joined here after seeing a lot of knowledgeable posts to issues. I'll just list what I have done/know.

The crash looks like this.

http://go.overclockers.com/?id=1132X509988&url=http%3A%...

here's the build:

Gigabyte GA-MA785GMT-UD2H
Corsair CMPSU-400CX
AMD Phenom x2 555
Cooler Master elite 341 case
Cooler Master Hyper 212+ HSF w/ AS5
one module from this kit http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Windows 7 64 bit
one extra 120mm fan for the front of case


1.prime95 medium test, crash at beginning of test

test 2, 4000 lucas-lehmer iterations m19922943 using fft length 1024k

2. prime95 light test runs fine, temps fine

3. crash once in memtest, hasn't since

4. errors during test 5 of memtest86, not since. I might run this again to make sure. also the test stopped or it froze since esc did nothing.

5. exchanged board, same issue with new one.

6. no overclocking, everything is at stock right now.

7. updated bios, no luck.

Can someone please help... This has been extremely annoying since this is my first full build.

Someone mentioned something about vcore and that to match the vcore in cpu-z in the bios. Can that help and how do I do it?

Can the ram still be bad, I bought it used and contacted the seller. Obviously he doesn't want it to be bad so he has been assisting me in solving the issue with no luck. But he said if the ram is bad he would refund me as long as I can prove it somehow. I already sent a screenshot of memtest86 errors, but he was convinced it could have been caused by something else. I dont have any other ram to test.

I am hoping it is a bios setting issue and is just a product of it being a fresh build.
a b B Homebuilt system
March 7, 2010 6:39:11 AM

Have you manually set your RAM's voltage and timings? If you got an error once, it's for a reason. I'd set your RAM to spec, then run a memtest overnight. Most RAM issues will pop a BSOD, but sometimes funny (not so funny) things happen. If you're at stock clocks, I wouldn't mess with CPU voltages. When a CPU manufacturer releases a chip for retail, it works at stock voltages.
March 7, 2010 6:42:23 AM

ok how do I do that. Sorry i am completely new this stuff.
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March 7, 2010 7:10:14 AM

I set the timing right I think, my ram is 9-9-9-24 and I found where those numbers were in the ram. but it was 9-9-9-28 so I changed it to 24. but same crash
a b B Homebuilt system
March 7, 2010 2:58:30 PM

Yep, that sounds right, now you just need to set your RAM voltages. I can't guarantee that's what's wrong, but if you got an error before it should be taken care of.

Looks like your RAM needs 1.85 volts, just double check in the BIOS what it's feeding to it.
March 8, 2010 12:05:46 AM

yeah, several people have told me to up the voltage but they werent sure if my mobo uses 1.5 as the default. I'm pretty sure it does.

and after upping it just +0.05 the pc lasted muc longer in prime95, to test 9.

so I'll go +0.15 to 1.65 first and see what that does.

Best solution

a b B Homebuilt system
March 8, 2010 12:44:36 AM
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Yep, I'd go at least 1.65, probably 1.75 for good measure.
March 15, 2010 3:08:53 AM

Best answer selected by MrOldboy.
March 15, 2010 3:09:21 AM

I fixed the issue a few days ago, it is stable at 1.7v. But I am trying to sell the ram so I can by a 4gb kit.
!