TWO Sticks or RAM = BSOD and failing Memtest #5. Each stick passes by itself in either slot

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irishdrunk

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Jul 25, 2013
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ASUS p5n73-am. Latest BIOS]

So with two stick in, memtest fails #5, and #8 sometimes. I have 3 sticks of 2GB DDR@ PC6000 (800mhz) Board supports this as OC, so I UC them to 667.
Each stick passes all tests for 5+ passes, by itself, in either slot (tried every stick in each slot on its own)

With one stick in, I get no BSOD's
With two stick in , I get random BSOD's of different flavors.

Prime95 Blend will run for a little while before workers fail or BSOD, stock settings on everything.

Also, board runs them at 667 by default, everything is on auto. Previously had tried linking 1:1 and running 5-5-5-15 and 5-4-4-20.

It's almost as if this board just can't handle two sticks at a time.

I have a 1.8V overvolage setting, I have tried up to +50.00mv. The RAM says 1.9 on it, but if I bump that up to 100.00mv, I get crazy errors in Memtest #2 and #3.

I have run sfc and chkdsk /r /f already . Anyone have any idea what is going on here. Just don't understand it, cuz everything is telling me the RAM is fine, I can run Prime95 Blend with any one of those single sticks in for hours and hours just fine, its just any combination of two sticks and this machine is a BSOD waiting to happen
 
Solution
bgunner
Are the ram sticks on the Asus QVL list? I have run across something very similar to this in the past. The issue was on a band new board, An Asus Crosshair formula III 790FX chip set. Tried to use OCZ Gold ram duel channel kit in it. It would run full tests of Memtest fine just on one stick but would error right in the beginning with both sticks. Called Asus and they said the ram was not compatible with the motherboard and try different ram. Turned out the ram was fine but not compatible with that board. This may be the issue for you.

Being an older Ram, DDR2 ram to be exact, can you find another machine to test the ram in with memtest to test if it errors together?.
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TastyPony

TastyPony

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Jun 21, 2013
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Could be a BIOS problem. Have you installed the latest version of the BIOS for your board?

Edit: Sorry my bad, was in a hurry. What the other guys say is pretty much spot on for what I was going to say, welp gl
 
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geofelt

geofelt

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Oct 9, 2006
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Over time, the manufacturing makeup of ram can change. Even ram with the same part number.
That is why ram vendors will not support ram that is not all from the same kit.
Some motherboards are particularly sensitive to mismatched ram.
A motherboard needs to control all ram in the same way. If there are subtle mismatches that could be causing your problem.
 
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irishdrunk

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Jul 25, 2013
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Ya, first thing I wrote

Two sticks are exact same, the other one is different.
 
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bgunner

bgunner

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Feb 13, 2009
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I know this will take a long time but try running memtest86+ for 12 or more passes on each stick separately. I have had sticks fail on tests longer than this but 12 tests should be good.

What version are you using of memtest and are you running it from the boot menu or inside the OS enviroment? It's best to run it from the boot menu as it will test all but 192KB of the ram installed unlike the OS version that tests what ever the OS is not using. This amount can be as high as 1.5GB depending on running programs and OS.

EDIT: Just in case here is a link to the newest memtest86+ http://www.memtest.org/

What CPU are running? just curious if that is giving the issue.
 
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irishdrunk

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Jul 25, 2013
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It's a q9300 lag 775.

Not at home right now, buts its the newer memtest+. Wanna say 4.2 or 4.02.

I have run up to 9 passes on each stick and way more than 12 on another because I let it run my whole work day.

It's all running from boot on a USB drive.

With two sticks I get multiple errors first pass on test 5 everytime.
 
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thenh813

thenh813

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Mar 5, 2013
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I would say the sticks are not compatable with each other or the Motherboard in dual channel or triple channel mode. My MB takes about anything though I have 1GB + a 512MB + a 256MB LOL. I need new ram. Your MB could also be faulty in a strange way or need a BIOS update to fully support those RAMs.
 
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irishdrunk

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Jul 25, 2013
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The motherboard doesn't support dual channel, and two of the RAM sticks are a dual channel kit, so I would venture they are about as compatible as it gets with each other. The 3rd stick is another brand all together, although no combination of any two sticks, including the identical sticks, produces desirable results
 
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thenh813

thenh813

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Hmmmm.... That could be the problem!
If dual channel is not supported not putting it in the first, second or third slot
could force it to use single channel mode. Do you have any other older ram
(possibly borrowed form another PC) to test in this one?
Have you tried setting the BIOS to only use single channel mode (if that setting exists for you)?
 
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I

irishdrunk

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Jul 25, 2013
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Board is Asus P5n73-am. Doesn't not support dual channel. There are only two DIMM slots.

Dual channel "kits" aren't special RAM, they are just identical DIMMS, which is preferred when utilizing dual memory channels on a motherboard that supports it.

Anyone have any idea what's going on here?
 
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bgunner

bgunner

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Feb 13, 2009
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Are the ram sticks on the Asus QVL list? I have run across something very similar to this in the past. The issue was on a band new board, An Asus Crosshair formula III 790FX chip set. Tried to use OCZ Gold ram duel channel kit in it. It would run full tests of Memtest fine just on one stick but would error right in the beginning with both sticks. Called Asus and they said the ram was not compatible with the motherboard and try different ram. Turned out the ram was fine but not compatible with that board. This may be the issue for you.

Being an older Ram, DDR2 ram to be exact, can you find another machine to test the ram in with memtest to test if it errors together?.
 
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