Blue screens due RAM, when CPU is under heavy load. ntoskrnl.exe

Lutinzo

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May 8, 2015
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Hello!

I tried to search for threads with similar problems as this, yet didn't quite find any, so I decided to make a new one.

I bought new RAM (Kingston HyperX Savage 1600mhz 2x8GB) and after that for some weird reason my pc keeps randomly-ish crashing every time CPU is under heavy usage, yet it isn't due heat. This happens randomly when playing games like Dota 2, CS:Go or GTA V, it might take five minutes or even couple of hours before bluescreen appears. I used intel's processor diagnostics tool to reproduce the blue screen and went on testing ram sticks in different slots etc, same issue every time. I then had my CPU tested at a shop with another build, it worked fine. Then I changed my mobo, I have two of same motherboards, after that I tested with various BIOS versions, but without success. Nothing helped, so it had to be my RAM, or so I thought at least.

After a while, I put my old RAM sticks back, they're old (kvr1066d3n7/4g) 1066mhz sticks, I had two of them. And POOF, the problem was gone, no more blue screens. So I went on and ordered HyperX Fury kit 2x8 GB 1600mhz, now I get the same problem again.

I messaged Kingston support about the Savage sticks, yet haven't had a chance to test them again on different pc. (Sticks were tested at the pc-mechanic, shop thingy at the same time as CPU)

My pc specs are:
Intel i7- 4770k (Not overclocked)
Gigabyte GTX 970 4gb windforce
MSI z87 g45 motherboard
Kingston SSDNow v300 120GB
Seagate Barracuda 2TB
Corsair TX 750w bronze (or something, too big anyways)
Windows 8.1 Pro

Here's a dropbox link to a rar containing last 7 minidumps. Out of those seven the newest two are with Fury RAM's and rest with Savage.


I'd really really appreciate your help, if someone could please look onto those dumps and break them down for me. (I did use bluescreenview but well...)

 

Lutinzo

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May 8, 2015
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I have tried both models in xmp mode, didn't help at all. I also tried every one separately and in different slots with aforesaid mode.
I had my bios updated to the newest one, but downgraded it in order to see if it has any effect, nothing at all.

I wonder if it's the speed that causes the issues? It wouldn't make any sense, but after all we're talking about computers so a ridiculous reason such as that wouldn't surprise.. I also tried to fool around with voltages of the DRAM's but minor increases didn't help either.

Sorry for the messy text, phone doesn't show formatting well.
 

Lutinzo

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May 8, 2015
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Seems that Fury ones do not have XMP, as couldn't find it from Bios.

With the Savages though, enabled the profile and set the voltages, still gave me a bluescreen under load. Also after crashing once it went on a loop, didn't go past the Windows' login- screen before bluescreen after bluescreen. For some reason any of those BSOD's, including the first one that was "made" with Intel's processor diagnostic tools, didn't create a minidump file.

One thing that caught my eye though, was that with both DRAM models, with voltage set on AUTO it fluctuates quite a lot between 1.488- 1.51 (or so). Is this normal behavior?

E: I had my PSU tested at the same time as CPU worked well, so can't be that either. I bet there is just some really stupid thing that I've forgotten or something, this mobo had "Memory training for fast boot" (or similar) activated and it caused the PC to get stuck pre- bios startup loop until ram sticks were taken off and switched slots. Eventually found the setting and disabled it, this was two years ago or so.

So all in all, sadly it didn't help. Big thanks anyways!
 

Lutinzo

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May 8, 2015
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Didn't help either, sorry :I.

This is one weird issue, IT guys didn't have a clue either. Every part works well separately in other PCs, including every DRAM stick. But when put together.. nope.