Dual Channel memory problems on Neo 875P

I am having considerable trouble getting the NEO 875P to work with dual channel DDR400 DIMMs. I have two Kingston KVR400X64C25 DDR400 256MB memory modules, each of which works correctly by itself. However, once I move one
of the modules to channel B, I cannot boot my operating system (currently Windows XP.) The problem also occurs in Windows 2000, which I also have on the system. I receive blue screen errors that indicate paging/memory problems. I have upgraded my BIOS to the latest version (1.3)* in the hope that it would solve my problems, but it has not. The POST screen detects that there is 512MB of memory working in Dual Channel mode, but even when it does get through the O/S booting process (rarely), it crashes within minutes. Putting just one of the chips in makes the system perfectly stable. If anyone has any information, please let me know!
Thanks,
Jim Keller
http://www.centerfuse.net
* My board was dead after trying to flash the 1.3 BIOS, but after about 10 attempts of using CTRL+HOME method to recover the BIOS, it finally worked with version 1.0. I then re-flashed with 1.3, and it rebooted fine. Are there any updates about all of the problems with v1.3 ?

>I can only answer based on what I've read on this forum
I figured as much, I was just wondering if you knew whether MSI themselves frequents the forums or answers emails sufficiently.
I've had an interesting development though. I stumbled upon Tom's Hardware Guide's article about 875P motherboards at http://www17.tomshardware.com/motherboard/20030519/i875p-01.html
They mentioned that they needed to increase the memory voltage from 2.5 to 2.6 in the BIOS to get some memory modules to work. I did this, and for the first time, I am running in Dual channel DDR mode. However, the article also mentions that "the system does not run completely stably", so I guess I'll have to wait and see if it crashes again. However, I'm far enough beyond the XP splash screen to post this message, so I guess we're getting somewhere!
-Jim Keller
http://www.centerfuse.net

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Todd,
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-Thank You
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hi bknoll,
welcome to the forum.
1) i wouldn't worry overmuch at the 201 issue.
2) Quote
I've ran memory test utilities. That had a good effect and the computer runs fairly stable, but I still have problems
which test utilities did you use, Don't quiet understand Quote
had a good effect and the computer runs fairly stable
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1 assume you can get into BIOS with 1 stick only?
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Dump question, but have you pickup the correct update e.g. for 64bit? ==> http://www.microsoft.com/downloads/details.aspx?FamilyId=91672C7C-614B-404C-850C-377541E93C18&displaylang=en
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Better double check it.
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Also how about that?:
Quote from: BOSSKILLER on 07-April-08, 23:55:36
Remove your OC then see how its goes.
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This question was solved.
View Solution.

kuzz1999 wrote:
memory will only work in single channel memory.try to put in slot 2 screen is blank. how do i change it to dual channel.i look in bois no settings for this.
"try to put in slot 2 screen is blank." What exactly do you mean by that statement?
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****Please click on Accept As Solution if a suggestion solves your problem. It helps others facing the same problem to find a solution easily****
2015 Microsoft MVP - Windows Experience Consumer

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Quote from: Tiresmoke on 03-November-05, 23:54:30
Have you tested each stick of RAM with Memtest86 yet? You may have a bad stick. You also may want to try the new set in a different socket sety. Another words if it was in 2/4 then try it in 1/3. If the timings are different on the two sets try setting to the slowest settings of the two. You may have to exchange the set for the twin to the old set just to make it work as mixing RAM rarely works well.
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