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5m Old Home Build BSOD. Help!

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I built this system 5 months ago and I seem to be getting random blue screen errors when I play various games. It is not consistant at all.

I want to say either the CPU or GPU are overheating!

I'm stuck without your help.

Helpful Info:
Just reinstalled Windows 7, so I seriously doubt this is a software issue

System Specs:
OPERATING SYSTEM:WINDOWS 7
CPU TYPE:INTEL(R) CORE(TM)2 QUAD CPU Q8200 @ 2.33GHZ
CPU SPEED (GHZ):2.356
SYSTEM MEMORY (GB):3.999
GRAPHICS CARD MODEL:NVIDIA GEFORCE GTX 260GRAPHICS CARD
DESKTOP RESOLUTION:1440X900

BSOD:
Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7600.2.0.0.768.3
Locale ID: 1033

Additional information about the problem:
BCCode: 50
BCP1: FFFFFA8063C743D8
BCP2: 0000000000000000
BCP3: FFFFF80002B9C13B
BCP4: 0000000000000005
OS Version: 6_1_7600
Service Pack: 0_0
Product: 768_1

Files that help describe the problem:
C:\Windows\Minidump\030310-21106-01.dmp
C:\Users\r3muse\AppData\Local\Temp\WER-38828-0.sysdata.xml

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I ran Memtest86 v4 through only one pass but everything checked out.

I d/l'd Prime95 64bit to load my cpu but I'm not sure how to measure the tempurature!

My case is starting to collect dust so I'm sure tempurature could be an issue

Best solution

Homebuilt system Authority
CPUs Expert

Ok, I'd let Memtest run overnight. Sometimes it takes a few passes to find bad spots.

I'd recommend Coretemp (http://www.alcpu.com/CoreTemp/) for monitoring CPU temperatures, and Speedfan (http://www.almico.com/sfdownload.php) for monitoring GPU temps, but there's more. I'd use Furmark (http://www.ozone3d.net/benchmarks/fur/) to get GPU temps up quickly. When you run Furmark, you need to enable "Stability test", or something like that, it will have it run until you tell it to stop, and has a temp monitor built in.

And get that dust out of there! :) 
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Thanks jack_attack!

I'll be home in a couple hours and I'll let the testing comince. Is there anything I need to look for? What is a tempurature that is to hot for my cpu and gpu?

I'll post results when I get home.
Homebuilt system Authority
CPUs Expert

I hope it helps. Memtest will let you know if it finds errors, I'd let it run overnight.

As far as your temps go, I'd get worried around 65-70C with that chip under load. I don't think it will throttle until 100C or so, but if it's getting too hot it can sometimes throw BSOD's out.

Nvidia says your GTX 260 can go to 105C, but I'd worry around 85-90C. My 8800GTX never breaks 80C, and it's a hotter chip that yours.

I think it's a safe bet to say you've got some dying RAM in there though.

I blew out all the dust and it seems to be alot more stable.

What are the highest temperatures I should see on my GPU and CPU?

Also, I'm using a Core 2 Quad Q8200 and core 0 is always running hotter than the other 3. Could the heatsink be loose over that core or is this normal?
Homebuilt system Authority
CPUs Expert

That's normal. Core 0 and 1 get used the most, so they'll be the warmest. Just at idle, those two perform the background tasks.

As far as temps, what type of cooler are you using? Either way, I'd try to keep it under ~55C. Your GPU can go a lot warmer, upwards of 80C.

I'm using the stock heat sink for my Q8200.

I just started up Prime95 and after 5mins SpeedFan is showing Core0 - 70C Core1 - 64C Core 2- 66C and Core 3- 65C

How about I buy a new Heatsink? Suggestions?
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