Memory Management BSOD when I Install 16gb of RAM.

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viksfan

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Nov 2, 2013
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Hi, so I just upgraded my computer. I bought a Z87-PRO Mobo, GTX 760 Video Card, Intel 4770k Processor, and an additional 8GB of Corsair Vengeance RAM. The computer runs fine when I just run just 8GB, but when I throw the other 2 4GB sticks in, and try to boot the computer, I get a Memory Management BSOD around the time when the Windows Logo pops up. I ran 5 passes on Mem-Test with all 4 sticks in the computer overnight, and it didn't get any errors. I am just wondering if I need to run more that 5 passes to find any errors on the RAM, or is there something that need's to be enabled in bios to have the 16GB in there.

Thank you for your time.
Daniel.
 
Solution
Tradesman1
Ok, try with either set in slots 1-3, go into BIOS enable XMP, select profile 1. Save, exit, shutdown, add the other sticks in 2-4, boot back to BIOS, if freq not at 1600, manually change to 1600, ensure base timings are 9-9-9-24, set DRAM voltage to 1.585 (yes, it's perfectly safe, then go to the system voltage and raise the VCCSA to 1.05 and give that a try
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Blaise170

Blaise170

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Sep 12, 2013
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These are the RAM limits for versions of Win7 (x64). Do you have HB or Starter by chance? Or another version of Windows for that matter?

Starter: 8GB
Home Basic: 8GB
Home Premium: 16GB
Professional: 192GB
Enterprise: 192GB
Ultimate: 192GB
 
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Half Life

Half Life

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Sep 2, 2013
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Ok, I want to rule out hardware problem. So here is what I'd say. Remove the two sticks that are on the board. Put the other two. Reboot. If not ok, then its the new sticks. If ok, then put all of them back and reboot. If not ok, then it's your board.

I know it's unscientific, but I suspect ram/ board (hardware) issue.

I am assuming that the bios recognizes all the installed ram each time. Also, I doubt if it's your windows version, cause even if it were to only support 8 GB, it would just report it as 16 installed, 8 available or something like that.
 
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viksfan

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Nov 2, 2013
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Thanks for the reply's. I have Home Premium, so by your chart it should support the 16gb Blaise, and Half Life I will reboot and try my other two sticks. Should I keep the other two in the same slots as the currently installed RAM? And yes, Bios does recognize them all.
 
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Half Life

Half Life

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I am not ruling out issues with the board yet, but it's a a very good sign that bios recognizes them all.

and os issue is out of question.

and correct, same slots. pull the known good ones, and put the new suspects in the same slots. and leave the plastic labels on the sticks if they come with them. you might need them to return/exchange/refund if they turn out to be the culprits.

reboot and report.
 
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Blaise170

Blaise170

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Sep 12, 2013
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Not sure how clear he was but he is correct. Try the old two sticks in slots A1/B1, then try both both old sticks in slots A2/B2. If both boot correctly, try the same routine with the two new sticks. Report your findings.
 
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viksfan

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Nov 2, 2013
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Ok, so I pulled the 2 new sticks, and put in the old 2 in A1/B1, and it booted fine. Then put the other 2 new ones back in A2/B2, with the 16gb in there, I once again received the BSOD. I removed the old RAM from A1/B1 leaving the new sticks in A2/B2 and it booted fine. Then removed the new ones from A2/B2 and put the old ones in A2/B2, and that aswell booted as normal. The only BSOD was with all 16gb in the board at once.
 
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Blaise170

Blaise170

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So it doesn't seem to be your motherboard or the RAM. Not too sure what the problem could be. Are the new sticks ECC by chance?
 
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Half Life

Half Life

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i think i know why. <<<BIOS flashing required>>>

See below
http://www.tomshardware.com/answers/id-1831099/solved-asus-z87-pro-dimm-slots-working.html

ahhahha, there is no defective part with you and you don't have to return anything. but you do need to do the bios flashing thingy just once and live happily ever after.

Download the latest/compatible version of UEFI bios firmware, put it on a HDD/USB and reboot, go to bios and flash flash flash.

happi OCing.

PS: As with all software/firmware updates, you will of course take a backup of a) your data on the disk drives, and b) your BIOS configuration prior to flashing, just in case. Your OS is not affected by the flashing. If at all, your system will be more responsive after the flashing.
 
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Tradesman1

Tradesman1

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Jun 5, 2013
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If none of the above work, we can try itright, what are the models of the DRAM you have, mixing sets of DRAM is never recommended as all to often it can be problematic and they don't want to play together, depending on the sticks you have (the model #s) we can prob get them to play with slight voltage/timings adjustments, let me know ;)
 
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viksfan

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Nov 2, 2013
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I flashed to my latest bios, and still no go. Could it possibly be that the cap on Windows 7 Home Premium is 16gb, but the gb actually being 1024, would make it so I have 16384, would that make a difference? Should I upgrade to Ultimate or Pro and see if that does anything? And to Tradesman1 the model # is cmz8gx3m2a1600c9. I will check to make sure my new sticks are the same thing.
 
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Tradesman1

Tradesman1

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Jun 5, 2013
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Ok, try with either set in slots 1-3, go into BIOS enable XMP, select profile 1. Save, exit, shutdown, add the other sticks in 2-4, boot back to BIOS, if freq not at 1600, manually change to 1600, ensure base timings are 9-9-9-24, set DRAM voltage to 1.585 (yes, it's perfectly safe, then go to the system voltage and raise the VCCSA to 1.05 and give that a try
 
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Solution
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viksfan

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Nov 2, 2013
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I was able to get booted into windows by setting the DRAM Voltage to what you suggested. I tried to raise the VCCSA to 1.05 but it capped at 0.999, so I just set it back to auto. Should I keep the DRAM Voltage this high? Or should I try to lower it?
 
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Tradesman1

Tradesman1

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Jun 5, 2013
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Should be good, and yes, it's safe, when you get 2 sets that don't won't to play, which is perfectly normal (that's why they make assorted packages with different amounts of sticks, so you can get a set of the full amount you want that's tested to work together, also why they cost more as the number of sticks go up, takes longer to test and find say 4 sticks that will play together than just 2 sticks...tolerances are so tight, that out of 20 sticks right off the line - they may only be able to get 1 4 stick set out of the twenty, the rest go into 3, 2 or 1 sticks packages (just an example)....many have had luck mixing a couple sets, especially with lower freq DRAM 1333/1600, but even with those there are often problems, also why the manufacturers only guarantee the ones in a particular package to work together....The DRAM and mobo manufacturers alike recommend against mixing sets
 
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viksfan

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Nov 2, 2013
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Well, after having a little fun, I got the BSOD once again. I think i'm just going to return my 8GB set, and buy a set of 4x4. Should I stick with Vengeance? Or what kind of RAM would you recommend?
 
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Tradesman1

Tradesman1

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Jun 5, 2013
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It that way with all DRAM manufactures, DRAM is made to such high tolerances, that they test sticks to find those that will play the best with each other, and that's A) why such a large variety of sticks/sets are out there (sets are tested to work together B) sets are more expensive than smaller ones as more testing is needed.........if just mixing DRAM was as simple as many of the 'experts' tell you it is (i.e. where they say "Yeah, just get another stick, or Yeah, buy two more of the same" etc.....then DRAM makers would do away with all the testing and do nothing but sell single stick packages and make a ton more money than they do - problem there is RMA's would skyrocket
 
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