Ram BSOD No Memtest errors?

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bazzach

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Apr 4, 2014
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So I bought a second kit of Corsair Vengeance Pro 8GB, totalling my ram to 16GB, yet i've had 2 BSOD's since installation, KMODE_EXCEPTION_NOT_HANDLED & PFN_LIST_CORRUPT & BAD_POOL_HEADER so far, I ran Windows Memory Diagnostic & no errors, I ran Memtest86 twice and 0 errors, can anyone help? my system specs below:

i7 3770k
4x4GB Corsair Vengeance Pro 1866 (red)
GTX 660 SLI
Corsair CX600m PSU
2x 1TB RE3
Corsair H100i cooler
Bluray reader/dvdrw
Corsair SP120s

I have checked power supply calculation using a popular site for sufficient power but reason for full specs is due to maybe sufficient power?

thanks
 
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Yeah I upgraded my motherboard when I first got it, it ran fine when there was only 2x 4GB of Corsair Vengeance Pro, it is rated 1866 as well, so its confusing
 
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1. Two sets of RAM are not guaranteed to work together even if they are same make and model and memory chips. You will likely need more DRAM voltage to make these work or if that fails, reduce timings.

2. Corsair has a habit of switching memory suppliers. They were originally using Hynix modules, and then after version 4.51 IIRC, they switched to something else..... so if you have one set before 4.51 and one after, that will make it harder.

Try setting DRAM voltage by 0.05v. If that works, try dropping it 0.01 at a time till ya find a problem and then go back up 0.01.

On another note ..... you're PSU is understand and of lesser quality, power delivery, voltage variations could be coming into play here.

http://www.guru3d.com/articles_pages/asus_geforce_gtx_660_directcu_ii_top_review,7.html

Here is Guru3Ds power supply recommendation:

GeForce GTX 660 - On your average system the card requires you to have a 450~500 Watt power supply unit.
GeForce GTX 660 SLI - On your average system the cards require you to have a 700 Watt power supply unit as minimum.

If you are going to overclock GPU or processor, then we do recommend you purchase something with some more stamina.
Click to expand...
 
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Are you using the XMP, stock settings, or manually entered RAM timings? I would recommend a BIOS reset to stock settings for RAM, and let Memtest run overnight. With 4 sticks of RAM, the timings may have to lower on your motherboard (which you didn't identify).
 
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yeah i'm using the stock XMP settings, I have the option to change my ram timings, the stock stuff is 9-9-9-24 or something on every ramstick and the voltage is 1.5v, oh sorry guys I forgot to mention my motherboard is an Asrock Extreme4 z77! both sets of 2x4gb vengeance pro have the same barcode, same serial number
 
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oh I forgot to mention that the BSOD could happen anytime from minutes to hours, its usually when browsing facebook looking at pictures, but it could be coincidence
 
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Yes they are the same stock number (not serial number) but version is the key issue....the stock number remains the same throughout and the switch was made at version 4.51

I should also mention that while you upgraded the BIOS when you 1st got the MoBo, there have probably been a half dozen BIOS upgrades since .... I'd have looked but ya didn't list MoBo Model.

I expected that you were using XMP since you said they were running at rated speed and while 1.5 volts may be what the XMP profile says, it's very rare that the MoBo will actually set that 1.5 if BIOS left on auto.

You will need to increase voltage to get two sets to run.

1. Go into the monitoring section of you BIOS and see what the actual voltage really is.
2. Using a method that feels comfortable,.... increase voltage . Some people like to go 0.01 at a time. I prefer to jump 0.05 and then go back 0.01 till I feel then back to the last good working voltage.

In my last build, the rated voltage was 1.65 but BIOS was setting to 1.675 when left on Auto. I needed to boost it to 1.70 to get stability at 2400

 
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Both ram slots have the SN CMY8GX3M2A1866C9R and both were bought from scan.co.uk, but you are probably right I have 2 incompatible sets even though they are the same, its very confusing, games run fine, every test runs OK, CPU-Z shows they are all manufactured by the same person and have everything exactly the same on timings/voltage/speed, so you're saying I should send it back?
 
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Again serial numbers must be unique .... to sets coming off the production line in a row would have different serial numbers. Motherboards and CPUs for example ..... The Asus Z87 Maximus VI Formula C1 stepping had an issue whereby external drives would not wake from sleep when the computer did. C2 eliminated the problem. Both have the same model designation.

CMY8GX3M2A1866C9R

CM = Corsair memory
8G = Module type (8 GB)
X3 = DDR3
M2 = Module Quantity (2 sticks in kit)
A = Revision A
1866 = DDR3-1866
C9 = CAS 9
R = Red Color

The Automobile equivalent would be like Nissan Xterra 4.0L V6 4WD 6SM
 
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you could send them back but they will tell you the same thing about mixing kits -- when you buy memory it best to but the lit as you need and not a 2 stick kit today and another 2 stick kit 4 months later that's way to hit or miss if you want a 4 stick set up then you should buy a 4 sticks in 1 kit cause there tested and matched to work together as a set
 
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I've switched down the ram speed to 1333mhz and haven't had a bluescreen all day, surely this isn't a way to live using a 3770k right? like I said before they are exactly the same kit, both are identical, the time is literally a month apart but I get what you're saying, either way my pc is seeming to be running fine but how can I get it to run at 1600mhz (default) without giving me various BSOD? running only 2 sticks at 1600mhz works fine, yes I even tried mixing up the 2 new and old and everything is fine
 
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I had a set of g-skills that kinda did this [they were a full kit] but same thing on a board would only work at bios default settings with one stick any thing over that issues but I used the kit in another board and they all worked just fine first board just seemed not to want that memory in it

could be the board don't like having the 4 sticks in it of that memory some times memory wount take from board to board what don't work well in one may work great in another

and with the cost of memory this can suck when it occurs

not that it can mean anything but that memory is not on your boards memory list
 
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that goes back to what I poster above this can be vid card/ driver issues

http://answers.microsoft.com/en-us/windows/forum/windows_8-system/dpc-watchdog-violation-windows-8-solved/8ce8fa54-9e1b-4b57-98b2-4dbb2a25864e?page=2

http://superuser.com/questions/732619/dpc-watchdog-violation-on-windows-8-1-only-when-i-restart-the-pc

this can be from bios corruption -- board drivers -- harddrive or harddrive firmware

you should kick back and go over all the stuff for your board and be sure its all correct and up to date for the correct stuff
 
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Solution


Memory faults are more likely to cause a hard freeze than a BSoD. This is reinforced by memtest coming back clean. What is most likely causing those BSoDs is memory corruption, not memory failure. Memory corruption that can cause BSoDs is caused by by bugs in the kernel or device drivers.
 
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Update from yesterday, I set the XMS profile settings and it changed my ram timings, not had one BSOD since yesterday! my motherboard set the ram at 9-9-9-24 1600mhz, the XMS profile changed it to 9-10-9-27, also my PC is much much faster now too! feels like I have a gaming rig now its that responsive! Thanks for the help guys
 
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