New i7 System Locking Up Repeatedly

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DillnutMcGee

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Oct 24, 2009
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I just upgraded my pc with an i7 920 on an Asrock X58 Extreme with 6GB of Corsair XMS3DDR3 1600 mem using Win 7 Ultimate 64bit. I am using a Sapphire 5870 as my vid card. My first board had a dead dimm and I had to RMA it with Newegg. I received the replacement yesterday and have been having trouble ever since.

The system seems to boot fine, but once it loads up in to Windows it will just randomly lock up. The system just halts and I have to reset it in order to get it up and running. This has happened while installing Win 7 and also at very random intervals. There is no BSOD message, just a system lock up.

I have tried everything I can to try to figure this issue out. I ran memtest86+ last night for 6 hours with no errors and also tested each individual stick just to confirm the mem wasn't the issue. I manually set the timings on the memory and is showing the correct timings in the BIOS. The CPU is running at stock speed and I have even upped the vCore with no positive results. I thought it might be the PSU, so I purchased a Corsair 650TX this morning to no avail. The same errors still persisted after the PSU swapout. I tested the hard drive and that returned no error, so I am now at a loss as to what could be wrong.

I can only think its either the CPU or another bad motherboard as I feel I have eliminated just about everything else. I would appreciate any help given in trying to work this issue out. Thanks in advance for any help given.
 
[Testing the CPU]
Use Prime 95, OCCT, Orthos or Intel Burn Tool to stress test the CPU.

Other than that, you may have a bad mobo.
 
I have used Prime 95 and OCCT and everything works fine until the computer locks up. The problem is that the computer may work for 5 mins or 45 mins, but it always locks up. I do believe it is the motherboard, but I am wondering if there is anything else I could possibly try just to verify what the actual is.
 
DillnutMcGee said:
I have used Prime 95 and OCCT and everything works fine until the computer locks up. The problem is that the computer may work for 5 mins or 45 mins, but it always locks up. I do believe it is the motherboard, but I am wondering if there is anything else I could possibly try just to verify what the actual is.
Click to expand...

I'm running a very similar setup that I just built and am getting the same thing.
i7 920
Asrock x58 extreme
ASUS 5870
6gb G.Skill

At first it would barely let me install windows until I manually calmed down the memory timings. They were initially set to something ridiculous like 5-5-5-16 with 1T or something.

I am getting the hard locks that come suddenly, no BSOD, nothing. Let me ask you something when you load up and exit windows does the screen seem to be choppy/wavy? I think maybe the mobo has an issue with our 5870s. I had it in my Q6600 build that I just upgraded with zero issues whatsoever.
 
I think I figured out my issue. I turned the memory settings down to 1333mhz and its now working like a champ, no lockups or any other issues. I have read where others have had issues with their memory running at 1600mhz using this board. Hopefully the next BIOS update will help cure this issue, but for now I at least have a usable system that I am happy with.
 
Did you try manually setting the timings for DDR3-1600 speed? If so, what did you set them to? Also, try relaxing them as rogers mentioned.
 
Just posted this in another, nearly identical thread so I'm just going to copy/paste my response:

That memory currently has issues with Corei7 motherboards. In fact, alot of DDR3-1600 memory has problems right now with Corei7. The latest RAM chips that both Corsair and Kingston (and possibly other brands) uses has an issue relating to the QPI. I have only spoken to Kingston about this, but the symptoms I've seen with Corsair are nearly identical, and the solutions are the same as well.

If you lucky, turning up your QPI/DRAM voltage will get you completely stable. 1.32500 would be a number I would start at. Its low enough that you shouldn't need any active cooling for the chipset, but high enough that it has fixed most issues I've seen.

What I would suggest doing is trying the voltage tweak I suggested (maybe trying a bit higher voltage if your still unstable), and in a few months RMA'ing the sticks to Corsair. By then, they should be using newer RAM chips which hopefully won't have this iss
 
... in that other thread, users found stability by running their RAM at DDR3-1333 speeds instead of DDR3-1600, btw.
 
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