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Windows 7: "ntoskrnl.exe" BSOD - Random moments

29 Jan 2012   #11

Windows 7 Ultimate 64bit
 
 

No errors still... I am using the Z68AP-D3 Gigabyte Mobo and 2x 4GB Corsair Ram CMZ8GX3M2A1600C9B.
If it is a driver causing it, is there no simple way to find it? I tried driver verifier, I had to restore my system to an older point. Humph, I built my computer in 2-3 days but I have been spending weeks trying to fix this crash. I did correct other errors though.


My System SpecsSystem Spec
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29 Jan 2012   #12

Windows 7 Home Premium 64 Bit
 
 

You can run Verifier with 5-10 drivers at a time. That sometimes provides more stability and still allows determination of any driver conflicts.
My System SpecsSystem Spec
01 Feb 2012   #13

Windows 7 Ultimate 64bit
 
 

Ok, now I am sure it's the Ram, but for some reason it doesn't crash with one ram not 2x. I own the Corsair CMZ8GX3M2A1600C9B Vengeance Desktop Memory Kit - 8GB (2x 4GB), PC3-12800, DDR3-1600MHz, 9-9-9-24 CAS Latency, Intel XMP Ready, Unbuffered
and for mobo: GIGABYTE GA-Z68AP-D3 Intel Z68 Motherboard - ATX, Socket H2 (LGA1155), Intel Z68 Express, DDR3 2133MHz, SATA 6.0 Gb/s, RAID, 7.1-CH Audio, Gigabit LAN, SuperSpeed USB 3.0, CrossFireX Ready

Any suggestions before complaining to Corsair? This has been happening since I built my computer, all new parts...
I made sure I was running XMP and 1.5v for voltage. What I don't understand is why I didn't find errors with ram tests, and for some reason my computer doesnt BSOD with one ram. Something to do with Dual Channel?
My System SpecsSystem Spec
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01 Feb 2012   #14

Windows 7 Home Premium 64 Bit
 
 

Up the voltage to 1.6 V and see if it behaves any better.
My System SpecsSystem Spec
01 Feb 2012   #15

Windows 7 Ultimate 64bit
 
 

Nope, didn't seem to help. Should I raise the dram ref voltage also? Could it be the mobo that is defective?
My System SpecsSystem Spec
01 Feb 2012   #16

Windows 7 Ultimate 64bit
 
 

bumpity bump sorry for editing last message..
My System SpecsSystem Spec
01 Feb 2012   #17

Windows 7 Home Premium 64 Bit
 
 

Yes, raise the DRAM voltage by 0.1 V
My System SpecsSystem Spec
01 Feb 2012   #18

Windows 7 Ultimate 64bit
 
 

Oh, sorry, yes I did do that, I was talking about the dram vref... which is at 0.750v (i think). The dram voltage is well at 1.6v now, but still crashes.
My System SpecsSystem Spec
01 Feb 2012   #19

Windows 7 Home Premium 64 Bit
 
 

oh, leave dram vref at its default value

Darn, sometimes that works.

Seems the two are not meshing well. Those modules were not tested by Gigabyte, so they are not guaranteed to be compatible by Gigabyte. You would have to call Corsair and ask if they should be compatible. If so, it is possible the RAM you received was defective or had an ESD attack.

You may find Avoid Static Damage to Your PC | PCWorld interesting further reading as to why RAM problems can occur. It basically says that ~400 Volts of electrostatic discharge (ESD) can ruin RAM, but you will not feel the discharge until it reaches ~1400-3500 Volts (that link says 3500-4000 Volts, but it varies based on the climate and how dry it is). When RAM receives a shock that we cannot feel, it can work for a while, and then slowly fail over time until symptoms become noticeable. That is one of the many reasons why so many users end up on these forums wondering why their systems are suddenly not working.

So for future reference, make sure you practice good electrostatic discharge (ESD) habbits and keep yourself grounded when touching PC components.

For ESD Safety, follow these steps:
  1. Shut down and turn off your computer.
  2. Unplug all power supplies to the computer (AC Power then battery for laptops, AC power for desktops)
  3. Hold down the power button for 30 seconds to close the circuit and ensure all power drains from components.
  4. Make sure you are grounded by using proper grounding techniques, i.e. work on an anti-static workbench, anti-static desk, or an anti-static pad. Hold something metallic while touching it to the anti-static surface, or use an anti-static wristband to attach to the anti-static material while working.
Once these steps have been followed, it is safe to remove and replace components within your computer.
My System SpecsSystem Spec
01 Feb 2012   #20

Windows 7 Ultimate 64bit
 
 

Darn. I thought I avoided ESD... I shall contact Corsair. Thanks a lot for the help.
My System SpecsSystem Spec
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 "ntoskrnl.exe" BSOD - Random moments




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