Random BSOD on new AMD Sli build

[notredame1250]

I built my computer about a month ago and it ran fine for about a week, Games, Video, and 3d Modeling all worked great. but then i started getting BSOD I figured it was just some drivers or something and since I was planning on upgrading to W7 Ultimate 64bit anyway i went and bought it assuming the problem would go away but it didnt. Once the install finished I got a BSOD copying my old files(videos, music, documents) to this computer. It also says I have random corrupt files after the copy. I installed metro 2033 and MOH 2010 and both games crash before ever getting to the menu.

I first ran Prime 95 and core 1 and 3 failed less than a minute then 4th core but the 2nd core keeps going and fails on test 3. So i decided to run memtest86 and received 3 errors in test#8, so I then tested each stick of ram separately. neither of them showed any errors. i tested both again in dual channel and got 2 errors which are different from the first test. I have run other tests like BurnInTest and it passes without a problem.

Anyone know what might be wrong?



Specs:
CPU: Amd Phenom II X4 955 BE
Cooler: OCZ Vendetta CPU Cooler
Motherboard: MSI NF750-G55 AM3 NVIDIA nForce 750a SLI
Ram: G.SKILL 4GB (2 x 2GB) DDR3 1600
GPU: 2x EVGA gtx 460 768mb sli
ssd: OCZ Vertex 2 60GB
HDD: Seagate Barracuda 7200.11 1TB
Psu: COOLER MASTER GX Series 750W ATX12V v2.31 SLI

 

[striker410]

I'm no expert, but sounds like the random crashes and errors arise from a bad motherboard.
Is memory at stock 1333MHz?
Is the 955 running at stock?
What are your temps?
And the last giveaway is the vertex 2. Is it an E series?

 

[notredame1250]

thanks for the quick reply

The memory is stock at 1600MHz and the the 955 is stock too at 3.2GHz
and it is not E series.
My Cpu idle temp is 50 deg C. It got to 69 deg C using FurMark.

 

[striker410]

CPU is hot under load. I believe 70C is the cutoff. Have you made sure you correctly applied thermal paste?

 

[notredame1250]

I was concerned about that too so I actually already reapplied that yesterday I even completely cleaned the cpu and it still had the same temps.
Should I try that again?

 

[striker410]

Hmm... What program are you using? Check out a program called coretemp: http://www.alcpu.com/CoreTemp/ I've used it, works great.

Next thing is the CPU cooler. Haven't heard of it, but it looks ok.

 

[notredame1250]

Thanks
I downloaded coretemp and now i have been running FurMark for about 20 minutes now and it shows the temperature staying below 60C. So does it look more like the motherboard is the problem?

 

[striker410]

I don't know. Have you tried posting on the motherboard's forums, or contacted the manufacturer? I think it would be a mobo problem, but I'm no expert in this area.

 

[notredame1250]

Well i kept looking through the forums and found that other people have problems with the exact ram and cpu I have when they are together. So instead of buying new ram i just thought id try to change the timing from 1600mhz to 1333mhz in the bios. Well that worked and there are no problems at all the computer works great.
Thanks for your help.

 

[ps3hacker12]

have you tried a BIOS upgrade, sometimes that helps.

 

[notredame1250]

Yeah i already updated the bios when i bought the board, but even though it is working fine at 1333mhz i would still like to have it at run 1600mhz so i kept looking online and found this on the motherboards page on msi's website for supported ram.

"• Supports Dual DDR3 800/1066/1333/1600 (OC)"

http://www.msi.com/product/mb/NF750-G55.html#?div=Detail

does the 1600(OC) have anything to do with my problem because the ram i bought is stock at 1600mhz so i shouldn't have to overclock it right?

 

[ps3hacker12]

yep, i had a board like that before, but i bought 1333Mhz RAM, which works fine, i think it just means it doesnt natively support 1600Mhz ram =/

 

[notredame1250]

Oh ok well thanks for you help.

 

[notredame1250]

Best answer selected by notredame1250.