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System Freezing During Prime95 Blend [2500K | P8P67-M Pro]

post #1 of 18
Thread Starter 
Hey everyone. I've been working on a build for an NZXT Vulcan and I'm encountering a small and interesting issue. Here's a link to the system (it's not my sig rig).

Usually pretty quickly after I start a Prime95 blend I'll get a hard freeze where all I can do is restart. No BSOD and the computer does not shut off. Screen freezes and there's no response.

So, here's what I've done so far in an attempt to solve this issue:

RAM:

I manually set timings set to their default spec as well as the voltage. [9-9-9-27-1 @ 1.65v]

I ran memtest86+ over night. Got through 8 passes with 0 errors. I have two sticks and did not run the test on each stick separately. I might go ahead and do that.

I ran HCI MemTest for over an hour until all of my ram was 100% tested with 0 errors.

This RAM was purchased new.

CPU/Mobo:

I'm running my 2500K at auto (stock) settings (except for my ram).

I tried enabling LLC (this mobo only has enable/disable settings) to no avail.

Both the CPU and Mobo were purchased new.

PSU:

Haven't done anything to test the PSU, however I had been using this PSU in my sig rig for over a month and had no problems with it.

GPU:

I tried removing one of the cards and was still able to lock up during blend.

Both of these GPUs came over to this rig from my sig rig along with the PSU. They had been running flawlessly for over a month.

HDD:

This hard drive is a few years old. HD Tune returned no errors and once a freeze happens there is no HDD activity.

I've read that a bad HDD could cause system lockups.

OS:

I have yet to try reinstalling windows.

Final Thoughts:

So, aside from that, I have still been able to replicate these lockups blending. However, on two or three occasions I've run the blend for over 2 hours with no lockup. One time it made it to over 5 hours. On these occasions, I simply stopped the blend having assumed that whatever changes I had made were successful. I would then restart the computer and run the blend again, just to double check, and I would get another lock up.

I have not had a lockup happen during gaming or normal use... yet.

I've looked into the issue and so far I haven't really found a solution. Does anyone else have any ideas on what could happening here? Is it more likely that my board or CPU are defective? Could these components just not be compatible? It's interesting because I'm using the same RAM and CPU as in my sig rig, but instead of an Asus P8P67-M Pro, it's an Asus P8P67 Pro, so I'm not really expecting this to be a compatibility issue.

Thanks beforehand for any help here. It's very much appreciated.
Edited by cinnamonbits - 4/10/11 at 7:03pm
The Tightbouncer
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The Tightbouncer
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post #2 of 18
by auto setting you mean stock clocks right?
if not then reduce clocks cpu might be unstable
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Bernice
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post #3 of 18
Thread Starter 
Quote:
Originally Posted by BadAssClocker View Post
by auto setting you mean stock clocks right?
if not then reduce clocks cpu might be unstable
Yeah, I mean stock. I'll update the post.
The Tightbouncer
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The Tightbouncer
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post #4 of 18
try increasing the clocks of the cpu, mabey that might work; or ocing the fsb?
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Bernice
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post #5 of 18
Thread Starter 
Quote:
Originally Posted by BadAssClocker View Post
try increasing the clocks of the cpu, mabey that might work; or ocing the fsb?
I'll give that a go. Thanks for the suggestion!
The Tightbouncer
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The Tightbouncer
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post #6 of 18
what cooler are you using ? if your cpu is cool then id be looking at ram testing to check for errors .. A cpu on stock freq should do fine in blend testing .

Im taking a wild guess and saying your ram is broke , nothing else should cause that ..
    
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post #7 of 18
Hard lock and freezing is usually indicative of lack of volts to the NB or refs... but your at stock...

you could try and up those a tad and see how it goes...
post #8 of 18
if your computer is locking up without a BSOD, it might be heat, whether the ram or the cpu is getting hot is unknown but try running it with the side case off or reseat the cooler.
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post #9 of 18
Thread Starter 
Quote:
Originally Posted by Xristo;13078253 
what cooler are you using ? if your cpu is cool then id be looking at ram testing to check for errors .. A cpu on stock freq should do fine in blend testing .

Im taking a wild guess and saying your ram is broke , nothing else should cause that ..

Yeah. I'm currently using an H70. It keeps my CPU quite cool. I hit ~55 C max during blend.

I definitely considered the ram as well. I ran memtest86+ overnight, going through 8 passes with 0 errors. However, I did this with both sticks of ram at the same time instead of individually. So, I'm considering doing each stick individually.

In addition, I did HCI MemTest on both sticks at the same time and got no errors from that either.

I'm definitely feeling stumped right now.
The Tightbouncer
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The Tightbouncer
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post #10 of 18
Thread Starter 
Quote:
Originally Posted by Sethy666;13078304 
Hard lock and freezing is usually indicative of lack of volts to the NB or refs... but your at stock... headscratch.gif

you could try and up those a tad and see how it goes...

Please pardon my ignorance, but what would those values be called in the Asus bios by chance? tongue.gif
The Tightbouncer
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The Tightbouncer
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